JP5036417B2 - Structure using bellows type frame - Google Patents

Description

The present invention relates to a structure using a bellows type frame that can be folded.

Design Registration No. 1181906 Design Registration No. 1277687 JP 2003-321951 A

  Temporary structures may be provided at special events. As an example of the structure used here, there is a “tent framework” according to the design described in Patent Document 1 by the applicant of the present application. However, this structure has the disadvantages that it takes time to assemble and withdraw, and the components are bulky, because the steel frame is assembled in the joint part.

  In order to improve the above drawbacks, a structure using a bellows type frame has been proposed. Here, the bellows type frame includes a cross frame unit in which two pipe elements are connected so as to be rotatable at intersections, and pipe elements in adjacent cross frame units are connected so as to be rotatable at connection points. It is comprised by this, Comprising: It can expand | deploy and fold. As an example, there are “an assembly toilet frame” according to the design described in Patent Document 2 by the applicant of the present application and “folding tent” according to Patent Document 3.

  In the above structure, the bellows type frame is used for the top frame, and as a result, assembly and withdrawal can be performed more quickly than the above, and particularly for the top frame part provided with the bellows type frame, Since the pipe element can be folded into an intimate shape, it has the advantage of being compact.

  However, this bellows type frame has been conventionally used only for a frame in which the extending direction of the frame is straight. For this reason, in the above structure, the top frame and the support column are bent, but the support column is a rod-like one and is connected to the top frame using the bellows type frame.

Here, even if the bellows type frame is used for the support column, since the space between the top frame and the support column is bent as described above, it cannot be formed as a single bellows type frame, and the bellows constituting each part. The expression frame had to be connected using connecting members. When separate bellows-type frames are connected in this way, it is necessary to perform expansion and folding operations for each frame, and there is a limit to speeding up assembly and withdrawal. Another problem is that the design of the structure is restricted.
In view of the above problems, an object of the present invention is to provide a structure using a bellows type frame that can be assembled and withdrawn more quickly.
A second object is to provide a structure using a bellows type frame having a high degree of design freedom.

In order to solve the above problems, the present invention includes a cross frame unit 2 in which two pipe elements 1 and 1 are rotatably connected at intersections a and c, and pipes of adjacent cross frame units 2 and 2 are provided. In the structure using the bellows type frame F which is configured by connecting the elements 1 and 1 to each other so as to be rotatable at connection points b and d, and which can be expanded and folded, A structure using the means is provided.

The bellows type frame F of the structure according to the present invention has at least one bent portion T, and the bent portion T is constituted by the adjacent cross frame units 2 and 2 and is diagonal. In a rectangular frame S defined by two intersection points a and c and two connection points b and d respectively located above, one of the intersection points a and c in the frame S and the intersection points a and c The above-mentioned points of the two pipe elements 1 and 1 that are in a relationship of intersecting at one side intersection a with respect to the inter-point dimensions ab, da, bc, and cd between the connection points b and d that are adjacent to c. The sum of the distances ab + da is equal to the sum of the distances between the points bc + cd of the two pipe elements 1, 1 that intersect at the other side intersection, and connects the intersections a, c of the frame S, The first route via one connection point b and the other connection point In the frame S in the bent portion T of the second path passing through the path, the path length ab + bc of the first path is longer than the path length cd + da of the second path, and the bellows type frame F Is expanded, the bending angle θ between two adjacent frames S1, S2 including the frame S in the bent portion T is equal to the straight line connecting the intersections a1, c1 of one frame S1, and the other This is an outer angle formed by a straight line connecting the intersections a2 and c2 of the frame S2 .

  The structure includes a main frame M in which at least two sets of the bellows type frames F are juxtaposed and stacked more than double, and the main frame M includes at least the above-described structure. A spacer 4 is arranged between the connecting portions of the two sets of bellows type frames F, and the spacer 4 maintains the state in which the bellows type frames F are arranged in parallel.

  Note that the expression “outer angle” used in the present application takes the above case as an example, a line segment between a1 and c1 in the frame S1, a line segment between a2 and c2 in the frame S2, and The outer angle between the line segment between a1 and c1 and the line segment between a2 and c2 at the vertex corresponding to the intersection c1 (a2) in the virtual triangle defined by the line segment between a1 and c2. pointing.

  At least one end portion of each bellows type frame F constituting the main frame M includes a grounding portion 3 that is grounded when the structure is disposed at the installation location, and is located at at least one end portion. Each of the end of one pipe element 1 and the end of the other pipe element 1 in the cross frame unit 2 can be implemented as constituting the grounding section 3 described above.

  Further, the main frame M is arranged in parallel, and these main frames M are connected by a joint frame J, thereby forming a tunnel-like structure in which a plurality of main frames M are arranged in the depth direction. Can be.

  Moreover, in the said square-shaped frame S, it can implement, as the angle X which the two pipe elements 1 and 1 which have the relationship which cross | intersects at each intersection a and c agree | coincides.

  In addition, the grounding portion 3 includes plate-like bodies 31 and 31 that are separately fixed to one pipe element 1 and the other pipe element 1 at the end of the cross frame unit 2 located at the end. In the state where the bellows type frame F is unfolded, each of the plate-like bodies 31 and 31 described above has an end surface 31a of the plate-like body 31 on the one pipe element 1 side and a plate on the other pipe element 1 side The end surface 31a of the shaped body 31 can be in contact with and supported with each other.
  Moreover, the top support part 5 which can support the one end of said main frame M is provided,

At least three sets of main frames M to M are provided so as to extend radially from the top support portion 5, and the end of each bellows type frame F at the other end of the main frames M to M is the above-described end. A grounding unit 3 may be provided.
  Further, the sheet-like body 6 may be supported on the bent inner portion of the bellows type frame F.

The present invention relates to inter-point dimensions ab, da, bc, cd between one of the intersection points a, c in the frame S and the connection points b, d adjacent to the intersection points a, c. The sum of the inter-point dimensions ab + da of the two pipe elements 1 and 1 that intersect at the one-side intersection point a is equal to Folding is possible because it is equal to the sum bc + cd, and connects the intersections a and c of the frame S, and a first path that passes through one connection point b and a second path that passes through the other connection point d In the frame S in the bent portion T, the bent portion T can be formed because the path length ab + bc of the first path is longer than the path length cd + da of the second path. Length of pipe element 1 constituting F, and intersection The connection point between c b, by changing the position of the d, readily provide a bellows frame F having a desired bending degree. Therefore, since the bent portion T can be configured without connecting a plurality of bellows-type frames as in the prior art, the bellows-type frame that can be assembled and removed more quickly than before can be provided. This can be effectively used particularly in a temporary tent used at a disaster site or the like that is used at a site where quick assembly is a top priority. Further, since a desired degree of bending can be easily realized, an accordion frame having a very high degree of design freedom can be provided.

And since the above-mentioned bellows type frame F was provided with at least two sets of main frames M configured in parallel, the strength of the bellows type frame F was able to be secured and it was possible to have self-supporting properties. is there.

  Also, in the frame S, the angle X formed by the two pipe elements 1 and 1 that are in the relationship of intersecting at the intersections a and c is the same. It can also be bent symmetrically with respect to a straight line connecting two connection points b and d in S.

Further, the grounding portion 3 includes plate-like bodies 31 and 31 that are separately fixed to one pipe element 1 and the other pipe element 1 at the end of the cross frame unit 2 located at the end. In each of the plate-like bodies 31, 31, the bellows type frame F is developed, and the end faces 31 a, 31 a are in contact with each other to support each other , so that the opening of the cross frame unit 2 is ensured. In addition, the grounding portion 3 can be stably coordinated at an installation place such as the ground .

Further, the top support portion 5 that can support one end of the main frame M is provided, and at least three sets of main frames M to M are provided so as to extend radially from the top support portion 5. , mainframe M~M easily can be combined into one point, Ru can be easily formed a dome-shaped structure.
If the sheet-like body 6 is supported by the bent inner portion of the bellows type frame F, the attachment and detachment of the sheet-like body 6 can be facilitated.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the bellows type frame of this example. FIG. 2 shows a bent portion in the bellows type frame of this example, and FIG. 3 shows the same straight portion. 4 to 11 show various shapes of the bellows type frame of this example. FIG. 12 shows a grounding portion in the bellows type frame of this example. FIG. 13 shows the main frame of this example. FIG. 14 shows a structure formed by the main frame and the joint frame of this example. 15 to 26 show a structure using the bellows type frame of this example.

  As shown in FIG. 1 (A) or 2, the bellows type frame F according to the present invention includes a cross frame unit 2 in which two pipe elements 1 are pivotally connected at intersections a and c as a basic unit. I have.

  In this example, a square pipe made of an aluminum alloy is used as the pipe element 1, but the pipe element 1 is not particularly limited thereto, and may be a round pipe or a channel material, for example. Further, the material is not limited to the aluminum alloy, and various materials such as a resin can be used.

  A plurality of cross frame units 2 and 2 are used, and the pipe elements 1 and 1 of the adjacent cross frame units 2 and 2 are connected to each other so as to be rotatable at connection points b and d. F is configured.

  By connecting a plurality of cross frame units 2 and 2 as described above, this bellows type frame F is constituted by adjacent cross frame units 2 and 2 as shown in each drawing of FIG. A quadrangular frame S defined by two intersection points a and c and two connection points b and d respectively located diagonally is formed. The bellows type frame F is a series of the frames S.

  Conventionally, the bellows type frame, such as the one according to the design described in Patent Document 2, has such a rectangular frame that is continuous only in one direction and in a straight line direction. On the other hand, in this invention, it has the bending part T which is a part in which the direction where this square frame S continues is changed.

  Next, conditions for folding and bending in the rectangular frame S will be described. For example, when forming a practical structure that can be folded from the state shown in FIG. 1 (A) to the state shown in FIG. 1 (B), the bellows type frame F is formed so as to satisfy these two conditions simultaneously. Need to form. The “bending” of the bellows type frame F in the present application means that the direction in which the frames S are connected is changed when the bellows type frame F is developed.

First, the condition for folding the bellows type frame F is that the distance between one of the intersection points a and c in the frame S and the connection points b and d adjacent to the intersection points a and c. With respect to the dimensions ab, da, bc, and cd (see FIG. 2A), the sum ab + da of the above-mentioned inter-point dimensions of the two pipe elements 1, 1 that intersect at the one-side intersection a is the other-side intersection c. Is equal to the sum bc + cd of the above-mentioned point-to-point dimensions of the two pipe elements 1 and 1 that are in an intersecting relationship. Each of the above sum dimensions is substantially the same as the vertical dimension when the pair of cross frame units 2 is folded (see FIG. 1B). Is necessary for folding. Note that this dimension only needs to satisfy the relationship in which the cross frame unit 2 can be folded, and is not so strict that each of the above-mentioned dimensions must be completely matched. Specifically, in consideration of errors in manufacturing the pipe elements 1 and 1, when each dimension of the sum is based on one dimension, the difference from the other dimension is desirably ± 5% or less, More desirably, it is ± 3% or less. However, at least a part of the connection points b and d between the pipe elements 1 and 1 has the above error as a structure in which a pin and a long hole are combined or a structure in which a pin and a hole having a diameter larger than that of the pin are combined. In the case of absorbing water, a larger dimensional difference than the above is acceptable.
Next, conditions for bending the bellows type frame F at the bent portion T will be described.

  Comparing each of the intersection points a and c of the frame S and comparing the first route passing through one connection point b and the second route passing through the other connection point d, the cross frame unit 2 is In the frame S in a portion that extends straight in one direction (hereinafter referred to as a straight line portion L), as shown in FIG. 3A, the path length (intersection (in this case, a), connection of the first path) Ab + bc and the path length cd + da of the second path are equal to each other (the sum of the dimensions between the points (same b) and c). In addition, this linear part L is the same part as the bellows type frame which existed conventionally.

  On the other hand, in the frame S in the bent portion T, the condition for bending is that the path length ab + bc of the first path is different from the path length cd + da of the second path. That is, as clearly shown in FIG. 2A, when the path length cd + da of the second path is shorter than the path length ab + bc of the first path, the direction of the shorter path length, that is, the second path The bellows type frame F bends to the side.

  At this time, as shown in FIGS. 2 (A) and 2 (B), for the combinations of the inter-point dimensions of the intersection points a and c and the connection points b and d constituting each of the paths, the connection points in the first path are shown. The path length ab on one side bordered by b and the path length bc on the other side are made equal, and the path length cd on one side and the path length da on the other side of the second path bounded by the connection point d are If they are equal, they are bent symmetrically as shown. In other words, assuming a straight line connecting the two connection points b and d in the frame S, bending is performed symmetrically with respect to the straight line. In addition, since it is bent in line symmetry as described above, the bent portion T is formed by the two pipe elements 1 and 1 having a relationship of intersecting at the intersections a and c of the frame S. Angles X and X coincide.

  Note that, as shown in FIG. 2C, the first path length ab and the second path length bc at the connection point b in the first path are different from each other, and the second path The path length cd on one side with the connection point d as a boundary may be different from the path length da on the other side. Although not shown, for any one of the above routes, the path length on one side and the path length on the other side at the connection point are equalized, and the connection point is set for the other route. The path length on one side and the path length on the other side may be different from each other. These cases are bent asymmetrically, unlike the case where the path length on one side and the path length on the other side at the connection point are equal in any of the paths as described above. In other words, assuming a straight line connecting the two connection points b and d in the frame S, bending is not performed symmetrically with respect to the straight line.

  In the case where the above conditions are satisfied, as shown in FIGS. 2A and 2B, when the bellows type frame F is developed, the amount of the bending angle θ between the two adjacent frames S1 and S2, The bellows type frame F is bent. The bending angle θ is an outer angle formed by a straight line connecting the intersections a1 and c1 of one frame S1 and a straight line connecting the intersections a2 and c2 of the other frame S2 (note that the intersection point c1 and the intersection point c1) a2 is the same point). Therefore, the bending angle per bending portion T is the sum of the bending angles θ between the frame S and the adjacent frames S and S at the bending portion T. Naturally, in the straight line portion L, the bending angle θ is 0 as shown in FIG.

  Since the bending angle θ is between the two adjacent frames S1 and S2, the bending portion T is provided in one of the frames S or a plurality of the frames S to S connected to each other. As the sum of the bending angles θ, a necessary bending angle can be realized in the entire bellows type frame F. Since the bending can be made symmetric or asymmetric as described above, the bending portion T and the straight portion L are appropriately assembled, for example, as shown in FIG. In addition, the bellows type frame F having a desired degree of bending can be provided. A line segment Y shown in FIG. 1A is obtained by tracing the bending degree of the bellows type frame F with reference to a connection point closer to the inside of the bellows type frame F.

  Pipe elements 1-1 and cross frame units 2-2 are formed so as to satisfy the above conditions, and a bellows type frame F is configured by connecting these cross frame units 2-2. Thereby, the bending part T can be easily formed in one bellows type frame F. Therefore, since a bellows type frame that extends only in a straight line as in the prior art has to be used, a plurality of bellows type frames can be connected using a connecting member for bending and connecting between frames, or a bellows type frame can be connected. There is no need to connect the expression frame and the column. Further, since the bent portion T is formed in one bellows type frame F, the bellows type frame F can be expanded and folded with one touch, and a structure is formed using the bellows type frame F. In this case, there is an advantage that the structure can be assembled and removed more quickly. Therefore, in particular, a temporary tent used at a disaster site or the like, which is used at a site where quick assembly is the highest priority, can be very powerful because it can be assembled and withdrawn with a single touch.

  Next, the example which provided the bending part T formed as mentioned above in the bellows type | mold flame | frame F is shown below. The following description is based on the state in which the bellows type frame F is developed, and illustrates the state.

  First, as described above, in the example shown in FIG. 1, the bellows type frame F has an arch shape. The upper portion of the bellows type frame F is provided with a plurality of bent portions T that are bent at the same bending angle θ, but a plurality of linear portions L are connected to the lower portion. It is supposed to have been. For the pipe elements 1 and 1 of the cross frame unit 2 constituting the connecting bent portion T2 located at the boundary between the continuous portion of the bent portion T and the continuous portion of the straight portion L, the upper connecting portion and the intersection point The inter-point dimension is formed to be equal to the inter-point dimension between the connection part and the intersection point of the pipe elements 1 and 1 in the bent part T, and the inter-point dimension between the connection part and the intersection point below the figure is In the straight line portion L, the pipe elements 1 and 1 are formed to have the same point-to-point dimension between the connecting portion and the intersection. Also in this connection bending part T2, since the conditions for folding described above are satisfied, the bending part T and the straight line part L are connected without difficulty, and the entire bellows type frame F is smoothly developed. And it can be folded.

  In the example shown in FIG. 4, the bellows type frame F is formed in an arch shape as described above. However, in this case, the straight portion L does not exist, and the connection portion and the intersection of the pipe elements 1 and 1 The point-to-point dimension is changed from that in the example shown in FIG. 1A, and the quadrangular frame S is further protruded in the inner and outer directions of the bend. That is, in this shape, there is a connection point b that is relatively outside the arch among the connection points b and d in each frame S, on the outer side of the straight line connecting the intersection point a and the intersection point c in each frame S. A connection point d that is relatively inside the arch exists near the inside of the straight line. By doing so, the bellows type frame F in the illustrated example has a star shape, but the bellows type frame F can be formed in various other unique shapes.

  In the example shown in FIG. 5, the bellows type frame F is similarly formed into an arch shape. However, in this example, only the bent portions T are connected, and the basic shape of the rectangular frame S is the same as the example shown in FIG. A thing and a small thing are coordinated alternately. Specifically, for each side constituting the two adjacent frames SL and SS shown in FIG. 5, the frame among the frames SS on the smaller side than the dimensions of the sides constituting the larger side frame SL. Each side existing at a position corresponding to each side of SL is assumed to be smaller.

  In the example shown in FIG. 6, the bellows type frame F is similarly arched, but in this example, a bent portion T is provided for every three of the continuous rectangular frames S to S. ing. That is, two straight portions L are connected, and one bent portion T is connected adjacently. While the two straight portions L are connected, the frame S extends linearly as shown in FIG. 6 using auxiliary lines.

  In the example shown in FIG. 7, the bellows type frame F is similarly arched. In this case, the left and right sides of the bellows type frame F are bent out of the continuous rectangular frames S to S. The quantity of the part T and the straight part L is changed. In this example, except for the bent portion T at the center of the bellows type frame F, three bent portions T are connected on the left side, and two linear portions L are connected on the tip side. On the right side, four bent portions T are connected, and one linear portion L is provided on the tip side. Thereby, the shape of the bellows type frame F can be made asymmetrical.

  In the example shown in FIG. 8, the bellows type frame F has a circular shape. In this example, all of the rectangular frames S present in the bellows type frame F are bent portions T having the same shape. The bending angle θ between each bending portion T and the adjacent frame S in this example is 22.5 °, and 16 bending portions T are connected endlessly on the entire circumference (bending angle θ The sum total of the entire circumference is 360 °) and the bellows type frame F is configured. Note that the bellows type frame F can be formed into an elliptical shape by connecting bent portions T having different bending angles θ, or an elliptical shape can be formed by sandwiching the straight portion L in the middle.

  The example shown in FIG. 9 is formed by meandering the bellows type frame F. For each of the pipe elements 1 to 1 constituting the bellows type frame F according to this example, the same point-to-point dimensions between the connecting portion and the intersection are used, but the same shape is used. The meandering is realized by connecting the series of bent parts T that are bent and the series of bent parts T that are bent in a direction opposite to the above-described bending. On the other hand, in the example shown in FIG. 8, the bellows type frame F is constituted only by a series of bent portions T that are bent in one direction, and thus has a circular shape.

  In this example, at least one straight line portion L is provided in a portion where the bending of the bellows type frame F can be changed. In the illustrated example, since all the pipe elements 1 to 1 have the same shape, in the bent portion T, the side with the long point-to-point dimension of each pipe element 1 is positioned outside the bend, and the side with the short point-to-point dimension is bent. It will be located inside. In the straight line portion L, the side with the long point-to-point dimension and the side with the short point-to-point dimension of each pipe element 1 are connected. It becomes a parallelogram.

  In the example shown in FIG. 10, the bellows type frame F is formed in a substantially U-shape. In this example, one set of roof portion R in which five straight portions L are connected, and two sets of column portions C in which two straight portions L are connected, are formed, and these sets are orthogonal to each other. In this way, one bent portion T is sandwiched between the roof portion R and the column portion C one by one. In this example, the sum of the bending angles θ between either one of the bent portions T on the left and right in the drawing and the adjacent straight portions L is 90 °.

  In the example shown in FIG. 11, the bellows type frame F is formed in a gable shape. In this example, two sets of roof portions R each having two straight portions L connected to each other and two sets of column portions C connected to each other are formed, and each set has an angle of 120 °. One bent portion T is sandwiched between the roof portion R and the column portion C and between the roof portions R and R so as to cross each other. That is, the sum of the bending angles θ per bending portion T according to this example is 60 °. In this example, the angle at which the roof parts R intersect with each other and the angle at which the roof part R and the column part C intersect with each other are 60 degrees, but they may intersect at different angles.

  The bellows type frame F described above can be combined in various ways to form a structure. In forming this structure, a grounding portion 3 is provided that is used when the structure is placed at an installation location such as the ground. In addition, the main frame M is formed in order to ensure strength and to have independence. These will be described below.

  First, the grounding unit 3 will be described. As shown in FIG. 12 (A), this is provided at the end of the bellows type frame F, and at the further end of the cross frame unit 2 located at this end, one pipe element 1 and the other The plate-like bodies 31 and 31 fixed separately to the pipe element 1 are provided. In this example, the pipe element 1 is screwed to the bracket 32 provided integrally with the plate-like bodies 31, 31, but the plate-like body 31 may be attached to the pipe element 1 by other means. Further, in this example, as will be described later, plate-like bodies 31 and 31 are attached to the end portion of the main frame M in which two sets of bellows type frames F are arranged in parallel, as shown in FIG. The plate-like bodies 31 and 31 may be attached to the end of the single bellows type frame F.

  When the bellows type frame F is folded, the respective plate-like bodies 31 and 31 are separated as shown in FIG. 25C, and the bellows type frame F is developed, and FIG. As shown to (B), each end surface 31a and 31a contact | abut and support. Thereby, the opening of the cross frame unit 2 is reliably fixed. When the end faces 31a and 31a are in contact with each other as described above, the plate-like bodies 31 and 31 are arranged horizontally as shown in FIG. As shown, the grounding part 3 can be stably coordinated at an installation location such as the ground.

  In this example, a fixture 33 is provided in order to fix the state in which the end faces 31a and 31a are in contact with each other. As shown in FIGS. 12A and 12B, the fixture 33 is provided on the latch 33a provided on the pipe element 1 on one side at the end of each bellows type frame F and on the pipe element 1 on the other side. As shown in FIG. 12 (C), it functions by hooking a latch 33a on a notch portion provided in the receiver 33b. The catch 33b in this example is a screw shaft, and the catch 33a can be prevented from coming off from the catch 33b by hooking the latch 33a and then screwing the fixing nut 33c into the catch 33b.

  Further, in order to stabilize the structure using the bellows type frame F, as shown in FIG. In this example, as shown in FIGS. 12A and 12B, weight support holes 31 b and 31 b are provided in the plate-like bodies 31 and 31, and a convex portion provided at the bottom of the weight 4 is provided here. By passing (not shown), the weight 4 can be prevented from being displaced from the grounding portion 3.

  In the present example, the grounding portion 3 is provided at the end of the bellows type frame F having the bent portion T. However, the present invention is not limited to this, and the straight portion without the bent portion T as shown in FIG. It may be provided at the end of the bellows type frame F in which only the portions L are connected.

  Next, the main frame M will be described. As shown in FIG. 13, the main frame M is configured such that at least two sets of the bellows type frames F are arranged in parallel, and these bellows type frames F to F are directly or indirectly connected to each other. Is. In this way, by stacking the bellows type frame F more than double, the strength can be secured and the frame can be made independent. Therefore, structures having various shapes can be realized.

  As shown in FIG. 13, a rod-like spacer 4 is provided between the connecting portions of the bellows type frames F, F so that each set of bellows type frames F, F constituting the main frame M can be stably deployed. The body is coordinated, and thereby the state in which the bellows type frames F and F are arranged in parallel is maintained.

  FIG. 14A shows an example of a structure configured by using a plurality of the main frames M and connecting the main frames M to M. The bellows type frame F that constitutes the main frame M used in this structure has an arch shape similar to that shown in FIG. 1, and in this example, the two main frames M are arranged in parallel. These are connected and used.

  The two main frames M and M are connected by a joint frame J. By using the joint frame J in this way, a plurality of main frames M can be arranged in the depth direction, and a tunnel-like structure can be formed.

here,
As shown in FIG. 14C, with respect to the distance between the connection points b and d in the quadrangular frame S, the distance WL at the straight line portion L and the distance WT at the bent portion T are different. Therefore, the joint frame J is different from the straight part joint frame J1 and the bent part joint frame J2.

  Specifically, the total length of the joint frames J1 and J2 when deployed is the same and coincides with the distance between the main frames M and M. Then, as shown in FIG. 14D, the distance when the pipe elements 1 and 1 are unfolded at the ends of the joint frames J1 and J2 is the connection point of the frame S at the straight line portion L in the straight line joint frame J1. The distance WL coincides with the distance between the connection points of the frame S in the bent portion T in the bent portion joint frame J2. By combining the joint frame J having such a shape with the bellows-like frame F or the main frame M, structures having various shapes can be formed as described below.

  In the example shown in FIG. 14A, the joint frame J is provided so as to be orthogonal to the side of the main frame M. However, the positional relationship between the main frame M and the joint frame J is as follows. For example, as shown in FIG. 16, a brazed joint frame J3 provided obliquely with respect to the main frame M may be used, and a plurality of joint frames J to J may be folded at the same time when folded. As long as the above is satisfied, it can be implemented in various shapes. Even when the brace joint frame J3 is provided as described above, the distance when the pipe elements 1, 1 are unfolded at the end of the brace joint frame J3 is the frame at the straight part L or the bent part T as described above. It is necessary to make the distance coincide with the distance between the connection points of S.

  Next, another example of a structure using a bellows type frame F is shown in FIG. This structure has six sets of main frames M in which two rows of bellows type frames F having bent portions T are arranged in parallel. Since the bent portion T is provided, the main frame M is curved when deployed. And in the state by which the main frame M was folded, the top part support part 5 made into polygonal column shape (in this case hexagonal column shape) is provided, and each said surface located in the side of this top part support part 5 is said 6 sets. By attaching the main frame M, the main frame M is arranged so as to extend radially around the top support portion 5.

  The grounding portion 3 described above is attached to one end of each main frame M to M. Specifically, on one side of the plate-like bodies 31, 31, one of the pipe elements 1, 1 in each set of two sets of cross frame units 2, 2 at one end of the main frame M is provided. The other of the pipe elements 1 and 1 is attached to the other side of the plate-like bodies 31 and 31 (see FIG. 12A). And the other end of each main frame M-M is attached to the top support part 5 as mentioned above, Thereby, main frame M-M can be put together in one place easily. In this way, a dome-like structure as shown in the figure can be formed.

  The top support portion 5 includes a one-side separation piece 51 arranged on the upper side and a second-side separation piece 52 arranged on the lower side. One of the pipe elements 1 and 1 of each of the two sets of cross frame units 2 and 2 at the other end of the main frame M is attached to the one side separation piece 51, and the other side separation piece 52 is attached to the other side separation piece 52. The other is attached.

  When the main frame M is unfolded, as shown in FIG. 15A, the separation pieces 51 and 52 are supported by overlapping each other, and the opening of each cross frame unit 2 in the main frame M is fixed. Is done. When the main frame M is folded, as shown in FIG. 15B, the separation pieces 51 and 52 are separated vertically as the cross frame units 2 are opened. And after folding is completed, it will be in the state as shown in FIG.25 (C).

A sheet-like body 6 made of a soft resin or the like is attached to this structure. In this example, the sheet-like body 6 is supported by a bent inner portion of the main frame M (bellows-type frame F), which makes it easy to attach and remove the sheet-like body 6 to and from the structure. is there. Various means such as a string, a rubber ring, and a hook can be adopted as the means for supporting.
Next, various examples of other structures are illustrated and described.

  In FIG. 16, two accordion-shaped frames F and F are arranged in parallel, and the joint frames J to J are connected so as to connect the accordion-shaped frames F and F to each other. Is a structure provided.

  In FIG. 17A, two sets of main frames M each having two rows of circular bellows type frames F shown in FIG. 8 arranged in parallel are arranged in parallel. Is a columnar structure connected by joint frames J to J. In FIG. 17B, one set of main frames M is removed from the cylindrical structure shown in FIG. In other words, one set of main frames M in which two circular bellows-type frames F shown in FIG. 8 are arranged in parallel is arranged, and the surfaces to which each of the bellows-type frames F, F constituting the main frame M belong. Is a structure in which linearly extending bellows-like frames F to F that are orthogonal to each other are attached to the main frame M.

  18 shows the structure shown in FIG. 14A in which the sheet-like body 6 is attached along the curved inner side of the arch-shaped main frame M in the structure shown in FIG. 18A shows a state in which the sheet-like body 6 is attached to the lower side, and FIG. 18B shows a state in which the sheet-like body 6 is attached only upward.

  In each figure of FIG. 19, a main frame M is constituted by a bellows-like frame F having the shape shown in FIG. 4, and two sets of the main frames M are used, and these are connected by joint frames J to J. The sheet-like body 6 is attached to the structure along the curved inner side of the main frame M in the same manner as described above. FIG. 19A shows a state where the sheet-like body 6 is attached to the lower side, and FIG. 19B shows a state where the sheet-like body 6 is attached only upward.

  In each figure of FIG. 20, a main frame M is constituted by the substantially U-shaped bellows-like frame F shown in FIG. 10, and two sets of the main frames M are used, and these are connected to the joint frames J˜ The sheet-like body 6 is attached to the structure connected by J so as to be along the inside of the substantially U-shape. FIG. 20A shows a state where the sheet-like body 6 is attached to the lower side, and FIG. 20B shows a state where the sheet-like body 6 is attached only upward.

  In each figure of FIG. 21, a main frame M is constituted by the gable-shaped bellows-like frame F shown in FIG. 11, and three sets of the main frames M are used, and these are connected by joint frames J to J. The sheet-like body 6 is attached to the above-described structure along the inside of the gable shape. 21A shows a state in which the sheet-like body 6 is attached to the lower side, and FIG. 21B shows a state in which the sheet-like body 6 is attached only upward.

  22 is a dome-like structure having the same basic structure as that shown in FIG. 15A, and the number of main frames M to M provided radially is changed. It is. In FIG. 22A, three sets of main frames M are provided, and in FIG. 22B, four sets of main frames M are provided. According to the quantity of the main frames M to M, in the structure shown in FIG. 22 (A), the top support portion 5 has a triangular prism shape, and in the structure shown in FIG. 22 (B), the top support portion 5 is It is a quadrangular prism.

  In FIG. 23A, five sets of main frames M are provided, and the top support portion 5 has a pentagonal prism shape. In FIG. 23B, seven sets of main frames M are provided, and the top support portion 5 has a heptagonal column shape.

  In each figure of FIG. 24, eight sets of main frames M are provided, and the top support portion 5 has an octagonal column shape. FIG. 24A shows a state where the sheet-like body 6 is attached to the lower side, and FIG. 24B shows a state where the sheet-like body 6 is attached only upward. FIG. 24C shows a state in which, between the adjacent main frames M and M, portions where the sheet-like body 6 is attached and portions where the sheet-like body 6 is not attached are alternately provided in the circumferential direction.

  The structure shown in FIG. 25A is a modification of the structure shown in FIG. In the bellows-like frame F constituting the main frames M to M shown in FIG. 22B, only the bent portions T are connected, but the bellows-like shape constituting the main frames M to M shown in FIG. In the frame F, a straight line portion L is further connected below the bent portion T connected in the same manner as that shown in FIG. FIG. 25B is a plan view showing a state in which the structure is folded, and FIG. 25C is a side view showing a state in which the structure is folded.

The structure shown in FIG. 26A is a further modification of the structure shown in FIG. Specifically, the structure shown in FIG. 25A is extended in the illustrated depth direction. In this example, three top support portions 5 are provided, and the top support portions 5 to 5 are connected by main frames M and M arranged in the horizontal direction. And among the top support parts 5 to 5, three of the main frames M extending from the two top support parts 5 and 5 located closer to the end are supposed to land on the ground surface, and in the center part. Two of the main frames M extending from the one top support portion 5 positioned are supposed to land on the ground contact surface. FIG. 26B is a perspective view showing a state in which this structure is folded.
In FIG. 26C, the main frames M and M arranged at both ends in the longitudinal direction of the structure shown in FIG. 26A are omitted to form a gable shape.

  The bellows type frame F according to the present invention has a bent portion T formed in one bellows type frame F. By using this, a structure having various shapes can be obtained as shown above. It can be formed and has the advantage that the degree of freedom of design is very high.

  Examples of applications of the structure formed in this way include exhibition booths, clean rooms, outdoor event tents, temporary tents for disasters, arches (entrance gates, etc.), stage stands, and advertising towers. It can be applied to a wide variety of uses.

  In addition, the example of the structure shown variously above is only one application example of the bellows type frame F according to the present invention, and it is naturally possible to configure a structure having a shape other than that shown here.

It is an accordion type frame concerning an example of an embodiment of the invention in this application, (A) shows an unfolded state, and (B) shows a folded state. (A)-(C) show the bending part in the bellows type frame which concerns on an example of embodiment of this invention. The straight part in the bellows type frame which concerns on an example of embodiment of this invention is shown. An accordion type frame concerning an example of an embodiment of the invention of this application is shown. An accordion type frame concerning an example of an embodiment of the invention of this application is shown. An accordion type frame concerning an example of an embodiment of the invention of this application is shown. An accordion type frame concerning an example of an embodiment of the invention of this application is shown. An accordion type frame concerning an example of an embodiment of the invention of this application is shown. An accordion type frame concerning an example of an embodiment of the invention of this application is shown. An accordion type frame concerning an example of an embodiment of the invention of this application is shown. An accordion type frame concerning an example of an embodiment of the invention of this application is shown. 1 shows a ground contact portion in an accordion frame according to an embodiment of the present invention, in which (A) shows a state during deployment, (B) shows a state after deployment, and (C) shows a weight placed on the ground contact portion. Indicates the state. 1 shows a main frame according to an example of an embodiment of the present invention. (A) shows a structure formed by a main frame and a joint frame according to an example of an embodiment of the present invention, (B) shows an enlarged connection portion between the main frame and the joint frame, (C) Indicates a difference in distance between connection points in a rectangular frame in the main frame, and (D) shows a comparison of different joint frames. (A) shows the structure using the bellows type frame which concerns on an example of embodiment of this invention, (B) shows operation | movement of the top part support part at the time of folding the structure. The structure using an accordion type frame concerning an example of an embodiment of the invention of this application is shown. (A) and (B) both show a structure using an accordion type frame according to an example of the embodiment of the present invention. (A) and (B) both show a structure using an accordion type frame according to an example of the embodiment of the present invention. (A) and (B) both show a structure using an accordion type frame according to an example of the embodiment of the present invention. (A) and (B) both show a structure using an accordion type frame according to an example of the embodiment of the present invention. (A) and (B) both show a structure using an accordion type frame according to an example of the embodiment of the present invention. (A) and (B) both show a structure using an accordion type frame according to an example of the embodiment of the present invention. (A) and (B) both show a structure using an accordion type frame according to an example of the embodiment of the present invention. (A)-(C) show the structure using the bellows type frame which concerns on an example of embodiment of this invention. (A) shows the structure using the bellows type frame based on an example of embodiment of this invention, (B) is a top view which shows the state by which the structure was folded, (C) is the side view It is. (A) and (C) show the structure using the bellows type frame which concerns on an example of embodiment of this invention, (B) shows the state by which the structure shown to (A) was folded.

DESCRIPTION OF SYMBOLS 1 Pipe element 2 Cross frame unit 3 Grounding part 31 Plate-shaped body 31a End surface of plate-shaped body 5 Top support part 6 Sheet-like body F Bellows type frame S Square-shaped frame T Bending part M Main frame X Angle formed by pipe element a , C Intersection point b, d Connection point ab Point-to-point dimension between intersection point and connection point bc Point-to-point dimension between intersection point and connection point cd Point-to-point dimension between intersection point and connection point da intersection point and connection point Between points ab + da sum of dimensions between points bc + cd sum of sizes between points ab + bc path length of the first path cd + da path length of the second path θ bending angle

Claims (6)

It has a cross frame unit (2) in which two pipe elements (1, 1) are pivotally connected at an intersection (a, c), and the pipe elements (1, 2) of adjacent cross frame units (2, 2) 1) In the structure using the bellows type frame (F) which is constructed by connecting each other at connection points (b, d) so as to be rotatable, and can be expanded and folded ,
The bellows type frame (F) has at least one bent portion (T),
The bent portion (T) is composed of adjacent cross frame units (2, 2), and has two intersections (a, c) and two connection points (b, d) located diagonally. ) And a rectangular frame (S) defined by
The point-to-point dimensions (ab, da) between one of the intersections (a, c) in the frame (S) and the connection point (b, d) adjacent to the intersection (a, c). , Bc, cd)
On the other hand, the sum (ab + da) of the above-mentioned inter-point dimensions of the two pipe elements (1, 1) that intersect at the side intersection (a)
It is equal to the sum (bc + cd) of the above-mentioned inter-point dimensions of two pipe elements (1, 1) that are in a relationship of intersecting at the other side intersection point,
Of the first route passing through one connection point (b) and the second route passing through the other connection point (d), connecting the intersections (a, c) of the frame (S) ,
In the frame (S) in the bent portion (T), the path length (ab + bc) of the first path is longer than the path length (cd + da) of the second path ,
When the bellows type frame (F) is deployed, the bending angle (θ) between two adjacent frames (S1, S2) including the frame (S) in the bent portion (T) is one frame. It is an outer angle formed by a straight line connecting the intersections (a1, c1) of (S1) and a straight line connecting the intersections (a2, c2) of the other frame (S2) .
The structure includes a main frame (M) in which at least two sets of the bellows type frames (F) are arranged in parallel and stacked more than double, and the main frame (M) The spacer (4) is arranged between the connecting portions of the at least two sets of the bellows type frames (F), and the bellows type frames (F) are arranged in parallel by the spacer (4). Is to maintain
At least one end portion of each bellows type frame (F) constituting the main frame (M) includes a grounding portion (3) that is grounded when the structure is disposed at the installation location. The end of one pipe element (1) and the end of the other pipe element (1) in the cross frame unit (2) located at the end of each constitute the grounding part (3). A structure using a bellows type frame characterized by that. The main frame (M) is arranged in parallel, and these main frames (M) are connected by a joint frame (J), whereby a plurality of main frames (M) are arranged in the depth direction. The structure using the bellows type frame according to claim 1, wherein the structure is formed. Claims in the rectangular frame (S), characterized in that the angle (X) formed of respective intersections (a, c) two pipe elements are in a relationship intersect at (1,1) matches A structure using the bellows type frame according to 1 or 2. The grounding portion (3) is a plate-like shape fixed separately to one pipe element (1) and the other pipe element (1) at the end of the cross frame unit (2) located at the end. The body (31, 31),
Each of the plate-like bodies (31, 31) includes the end face (31a) of the plate-like body (31) on the one pipe element (1) side and the other pipe in a state where the bellows type frame (F) is unfolded. The structure using a bellows type frame according to any one of claims 1 to 3, wherein the end face (31a) of the plate-like body (31) on the element (1) side comes into contact with and supports each other . A top support (5) capable of supporting one end of the main frame (M),
At least three main frames (M to M) are provided so as to extend radially from the top support portion (5) ,
The end portion of each bellows type frame (F) at the other end of the main frame (M to M) is provided with the grounding portion (3) . A structure using the bellows type frame described in 1. The structure using the bellows type frame according to any one of claims 1 to 5 , wherein a sheet-like body (6) is supported on the bent inner portion of the bellows type frame (F). .