JP2019085868A5 - - Google Patents

Description

Frame structure

  The present invention relates to a framework structure used for a garage, an agricultural greenhouse, a tent house, and other simple buildings, and is particularly configured by binding bent pipes or rods. About.

  Conventionally, as a frame structure applied to a skeleton for forming a large indoor space such as a large temporary tent or a tent warehouse, morphological stability and high rigidity and strength are required, the following patent document A truss structure mainly as disclosed in 1-4 is used.

  On the other hand, a simple skeleton for constructing a relatively small indoor space such as a home garage or agricultural greenhouse has a roof with a small weight and a relatively low height. But a frame using a frame with a rigid frame structure (for example, Patent Documents 5 and 6 below) and a large number of pipes bent into an arched shape or an inverted U shape are formed on both side walls. In many cases, a frame (for example, Patent Literatures 7 and 8 below) in which a ramen structure is formed by horizontal bars that are supported by a stilt and that are laid horizontally in the middle of each pipe.

Patent Publication No. 2914564 Patent Publication No. 3455936 Patent Publication No. 3852202 Patent Publication No. 5971878 JP-A-2002-295043 JP 2006-238834 A Registered Utility Model Publication No. 3104416 JP 2013-11115 A Japanese Patent Publication No. 5-12047 Japanese Patent Publication No. 7-110382 Patent Publication No. 2715397 Patent Publication No. 3593105

The simple skeleton for forming a small-sized indoor space according to the prior art described above has a structure that is weak against external forces such as wind pressure because both side walls are erected by a ramen structure. It is inevitable that reinforcement measures must be taken as necessary.
Also, if the spacing between the frame members and bent pipes that are erected and aligned at regular intervals increases, the curtains that are stretched and the thin sheet materials that are attached are likely to bend, and if the deflection increases over time, the appearance will increase. Will be unsightly.

By the way, the applicant of the present application has been developing and improving a method and apparatus for pushing and bending a pipe or a rod material since 1989 (Patent Documents 9 to 12). Can be stably and accurately performed with a small radius of curvature while preventing the cross section of the tube material from being flattened, and moreover, flexible three-dimensional continuous bending can be realized.
Then, the pipe material bent by the push-through bending apparatus has undergone work hardening due to being ironed by the bearing portion of the die, and has a higher strength than the state before the processing.

In view of the above, the present invention provides a framed structure that can be configured by using a pipe material that has been bent by the push-through bending apparatus, and thus has a small indoor space as disclosed in Patent Documents 5 to 8 described above. It is an object of the present invention to solve the above-mentioned problems pointed out about a simple skeleton for constituting the above.
In addition, since the working efficiency and the working accuracy of the pipe material cannot be obtained even with the push-through bending device, the bar material is formed by a conventional press bending process. Bars are not excluded because they can be used for the body.

This gun onset Ming, arcuate with being bent in a first plane wave of constant amplitude centered on the linear axis, the bending direction perpendicular to the direction of the first plane wave in the entire interval or a partial section A first pipe or bar that has been bent and superimposed on the arc-shaped bending, and has been bent into a second planar waveform having a constant amplitude and a constant cycle centered on the arc-shaped bending surface ; each large number using only a symmetric plane waveform and said first tube or rod and a different second tube, or rod with respect to said linear axis first plane waveform and the waveform, the first a surface by framework by tying a maximum amplitude part of the tube or of the first plane wave in the bar the maximum amplitude portion and the second tubular material or the symmetric plane wave in the bar to face contact A skeleton structure characterized by being constructed According to the body.
According to the framework structure of the present invention, when the pipe or bar bent into a symmetrical plane waveform is laterally connected between the maximum amplitude portions, one of the arched surfaces in the longitudinal direction of the tube or bar is formed. It is possible to form a framed surface which is an arc-shaped surface corresponding to a part or the whole, and furthermore, the arc-shaped surface undulates in a direction perpendicular to the surface along the linear axis at a constant amplitude and a constant cycle.
The plane waveform may be a waveform meandering around the linear axis, and the amplitude is required to be constant, but it does not matter whether or not there is periodicity.
Regarding the bending method for the pipe material, it is preferable to use the press-through bending apparatus in that the bending is performed without flattening the cross section of the pipe material as much as possible, and the bending method for the rod material is conventionally used. It is desirable to use roll bending, press bending, or a combination thereof.
As a means for binding, a binding tool of a type in which two pipes or rods are held and fixed by a locking mechanism, or a resin or metal binding band conventionally used widely can be used. As long as it is a simple framed structure that is temporarily used, a unit that binds with a resin or metal adhesive tape may be used.

In this gun onset bright, before Symbol plane wave is continuously alternately tilting section and the same length with the angle of intersection ± 60 ° relative to the linear axis parallel to the maximum amplitude section with respect to the linear axis It is desirable to have a trapezoidal waveform with a constant shape.
By adopting such a configuration , each framework structure constitutes a honeycomb structure surface in which regular hexagons formed by a pipe or a bar are arranged vertically and horizontally without a gap, and external forces acting in the direction of the same surface are dispersed. As a result, the wall surface has a large buckling strength.

Also, the plane wave in the present invention may have been with a sinusoidal waveform.
By providing a sinusoidal waveform, a smooth waveform of the pipe or the bar can form the adjacent skeleton surface, and thus a unique high aesthetic property can be exhibited.

Further, in the present invention, both end surfaces of each tube or each bar are aligned on two surfaces perpendicular to the linear axis, and the positions of the end surfaces of each tube or each bar on the two surfaces are the same. It is desirable to keep.
In this way, the bone set surface configured into a predetermined unit size surface, the end faces of each tube or each bar in the unit size surface connected by a predetermined joint mechanism, to expand to a larger framework surface It is possible to go.
In addition, if the positions of the end faces of the respective pipe members or the respective bar members are not only the same but also aligned, the connection operation by the joint mechanism becomes more efficient.
On the other hand, when expanding the unit size surface to the side, it is only necessary to bind the maximum amplitude portions of the pipes or rods at both ends of the skeleton surface.

According to the gun onset bright scaffold structures, by tying the bending has been performed tube or rod in a predetermined condition, it is possible to construct an arc-like wall surface that by the framework.
Further, in the framework structure of the present invention, the wall surface of the framework is configured to undulate at a constant amplitude and a constant period, and has a constant elasticity with respect to an external force acting on the wall surface in the longitudinal direction of the pipe or the rod. By providing this, it is possible to absorb and alleviate the increase in brittleness due to the work hardening of the pipe and the bar by the bending process, and it is possible to express unique aesthetics due to waving.
Further, when the bending processing conditions trapezoid or sine wave, and frame structures with improved buckling strength in the honeycomb structural skeleton structure of the wall, high esthetics are substantially spindle-shaped window aligned Can be configured.
Then, it can Yuku be connected is expanded by a simple joint mechanism when the wall by bone set a unit wall surface of a predetermined size at a predetermined condition, easily corresponding that in the construction of framework structures various sizes and forms Becomes possible .
The arc-shaped wall surface using the framework structure of the present invention does not include a truss structure, but even if it is formed of a thin tube or rod, a conventional small-scale structure based on a ramen structure is used. It has a much stronger structure and is resistant to wind and snow, and has excellent seismic resistance, compared to a frame for laying curtains (garage, agricultural greenhouse, etc.).
In addition, since the frame constructed using the framework structure of the present invention has a mode in which the pipe or the bar meanders over the entire arc-shaped wall surface, when a curtain or a thin plate is attached, the extended surface of the curtain or the thin plate is used. Can be uniformly supported from the inside, and a number of fixed portions can be provided evenly, so that the bending of the curtain or the thin plate can be made inconspicuous.

A front view (A) and a side view (B) of a tube material after bending used for the frame structure according to the first embodiment, and a front view of two types of tube material after bending used for the frame structure according to the second embodiment. (A1), (A2) and a side view (C). FIG. 3 is a front view (A), a side view (B), and a plan view (C) of the skeleton structure according to the first embodiment. It is an external appearance perspective view which shows the example of a binding tool. It is a front view (A), a side view (B), and a plan view (C) showing that a cylindrical framework wall surface can be formed by the framework structure according to the first embodiment. It is the front view (A), side view (B), and top view (C) of the framework structure which concerns on Example 2. A front view (A) and a side view (B) of a bent pipe used for the frame structure according to the third embodiment, and a front view of two types of bent pipes forming the frame structure according to the fourth embodiment. (A1), (A2) and a side view (C). It is the front view (A), side view (B), and top view (C) of the framework structure which concerns on Example 3. It is the front view (A), side view (B), and top view (C) of the framework structure which concerns on Example 4. It is the front view (A), side view (B), and top view (C) of one pipe after bending process used for the frame structure which concerns on Example 5. It is the front view (A), side view (B), and top view (C) of the other tube material after bending process used for the framework structure which concerns on Example 5. It is the front view (A), side view (B), and top view (C) of the framework structure which concerns on Example 5. It is the front view (A), side view (B), and top view (C) of another frame structure (frame wall is wavy) which concerns on Example 5. FIG. 16 is an explanatory diagram of a case where the skeleton structure according to the first embodiment is connected by a pipe joint as the sixth embodiment. It is an appearance perspective view showing three kinds of examples of a pipe joint. FIG. 15 is a cross-sectional view of a main part in a case where the ends of the tube material of the skeleton structure are connected by the pipe joint of FIG. It is the front view (A), side view (B), plan view (C), and XX arrow sectional view (D) of a bar joint in case a frame structure is comprised with a bar. FIG. 17 is a cross-sectional view of a main part when the ends of the bar members of the skeleton structure are connected by the bar joint of FIG. 16. It is a front view (A) and a side view (B) of a curtain body extension building frame (agricultural vinyl sheet or greenhouse) configured by connecting the frame structures of the first embodiment and the fifth embodiment. It is a front view (A) and a side view (B) of another curtain body for extension body construction (garage) constituted by connecting the framework structures of Example 1 and Example 5 .

An embodiment of the framework structure of the present invention will be described with reference to the drawings.
In each embodiment, a frame structure using a pipe material bent by a press-through bending method will be mainly described. As a material, a carbon steel pipe for machine structure (STKM) and a stainless steel pipe (SUS304, etc.) are generally used. When the mechanical strength is not required, an aluminum tube is also used.
In the case of a framed structure using a bar, the bending of the bar is performed using a press bending (press bending method), a draw bending (rotary pull bending method), and a compression bending ( Compression bending method) is applied.

The tube material 11 used in the frame structure of this embodiment is bent into a plane waveform as shown in FIG. 1 (A): front view and (B): side view.
Specifically, in the tube 11, the maximum amplitude section 13 parallel to the linear axis 12 and the inclined section 14 having an intersection angle of ± 60 ° with the linear axis 12 are alternately continuous with the same length. This is a trapezoidal waveform that has been bent.

When the tube 11 is turned over, the tube is a tube whose front view is symmetrical with respect to the linear axis 12 in FIG. 1A and whose side view is (B).
Therefore, when a large number of pipes 11 of the same form are prepared in advance, and the maximum amplitude sections 13 are abutted against each other and sequentially bound laterally by the binding tool 15, a frame structure as shown in FIG. 16 can be configured.
However, the frame structure 16 in this embodiment is formed by binding ten pipes 11.

Here, the binding tool 15 as shown in FIG. 3 is used.
The bundling tool 15 is provided at both ends of a metal strip 15a made of stainless steel or the like, which is bent so as to embrace the outer peripheral surfaces thereof in a state where the two pipes 11 abut in a parallel relationship. Is a device in which a hook portion 15b and an engaging portion 15c are fixed to each other by welding or the like, and the two tube members 11 are received inside using the elasticity of the band plate 15a, and the hook portion 15b is hooked on the engaging portion 15c. By stopping, each tube material 11 is held and bound.

According to the skeleton structure 16 of this embodiment, as shown in FIG. 2, although it is a planar structure composed of the tube material 11, a honeycomb structure in which regular hexagons are arranged without gaps is configured, and the honeycomb structure 16 acts in the direction of the framing wall surface. It has a large strength against external force.
Further, since the adjacent tube members 11 in the frame structure 16 are mutually rotatable only by binding the maximum amplitude sections 13 to each other with the binding members 15, as shown in FIG. It is possible to bend to a framed wall surface that constitutes a part, and it is also possible to form a meandering wall surface or a wall surface bent in a triangular wave shape.

Therefore, the skeleton structure 16 of this embodiment has a large mechanical strength even when a thin tube 11 is used, and can form various curved surfaces in the binding and connecting direction of the respective tubes 11. It is most suitable as a unit wall for constructing a skeleton (garage, agricultural greenhouse, etc.).
In particular, it is always possible to assemble easily if a large number of pipe materials 11 having the same shape are subjected to bending processing, and it is possible to always assemble them easily. Also, as shown in FIGS. Therefore, as described later, there is an advantage that the wall surface can be expanded vertically and horizontally by the connection in the vertical direction using the pipe joint and the connection in the horizontal direction using the binding device.

There are two types of tubing used in the frame structure of this embodiment. One tubing 21 is shown by (A1): front view and (C): side view in FIG. 1, and the other tubing 25 is shown in FIG. (A2): Front view and (C): Side view of the drawing.
In the front view, the pipe member 21 has a maximum amplitude section 23 parallel to the linear axis 22 and a slope having an intersection angle of ± 60 ° with the linear axis 22 as in FIG. 1A of the first embodiment. The section 24 has a trapezoidal waveform alternately continuous with the same length, and the tube 25 has a trapezoidal waveform that appears symmetrically with respect to the tube 21 and the linear axis 22.

However, the two types of pipes used in this embodiment are the pipes 21 and 25 as described above, as shown in FIG. This is because, in both cases, the trapezoidal waveform is also bent in the direction perpendicular to the bending direction in the trapezoidal waveform around the linear axis 22 together with the bending processing.
In this embodiment, (C): the trapezoidal waveform in the side view has the same period and the same phase as (A1) and (A2) in FIG. 1: the trapezoidal waveform in the front view, and the amplitude is slightly smaller. I have.

Accordingly, when a large number of the pipe members 21 and 25 are prepared, and the maximum amplitude section 23 of the pipe member 21 and the maximum amplitude section 23 ′ of the tube member 25 are opposed to and adjacent to each other and bound by the binding device 15, as shown in FIG. A wavy skeleton structure 26 can be formed, and the binding portion of the wavy skeleton wall surface is a peak (frontmost portion) and a valley (last portion) of a wavefront.
By waving the surface of the frame structure 26 in this manner, elasticity against external force applied in the direction of the pipe members 21 and 25 is imparted, and when the frame structure 26 is used as a frame for curtain covering, the frame structure of the frame is reduced. A unique aesthetic is exhibited by the wavy change of the curtain itself or the stretched curtain.

The tube material 31 used in the frame structure of this embodiment is bent into a plane waveform as shown in FIG. 6 (A): front view and (B): side view.
That is, while the tube 11 is bent in a trapezoidal waveform in the first embodiment, the tube 31 in this embodiment is bent in a sine wave shape with the linear axis 32 as the center axis.

When the tube 31 is turned over, the front is symmetrical with respect to the linear axis 32 in FIG. 6A, and the tube is the side shown in FIG.
Therefore, when only a large number of tubes 31 of the same form are prepared and the maximum amplitude portions 33 are opposed to and adjacent to each other and bound by the binding means, a framework structure 34 as shown in FIG. 7 can be constructed.
As the binding means in this embodiment, since the tube material 31 is bent sinusoidally, it does not satisfy the binding conditions between the straight sections as in the first and second embodiments, and thus is made of metal or resin. A binding band 35 is used.

According to the skeleton structure 34 of this embodiment, as shown in FIG. 7 (A), the skeleton surface in which the fusiform shape is continuous without any gap in a plane is formed by coupling the sine material to the side of the sine wave shape. It is possible to form a framed surface that is structured and presents a smooth impression of aesthetics.
This embodiment is different from the first embodiment only in the bending conditions for the tube material for the trapezoidal waveform and the sine waveform, and the other features are the same as those of the first embodiment.

There are two types of pipes used in the frame structure of this embodiment. One pipe 41 is shown in FIG. 6 (A1): front view and (C): side view, and the other pipe 42 is the same. (A2): Front view and (C): Side view of the drawing.
In the front view, similarly to FIG. 6A in the case of the third embodiment, the tube 41 is bent in a sine wave shape with the linear axis 43 as the center axis, and the tube 42 is in a straight line with the tube 41. This is a sine wave-shaped bending process that appears symmetrically with respect to the axis 43.

This embodiment is similar to the relationship of the second embodiment with respect to the first embodiment, and the two types of the tube material 41 and the tube material 42 in the form are as shown in FIG. 6C: side view. This is because both of the tube members 41 and 42 are bent in the sine waveform in the direction perpendicular to the bending direction together with the bending process into the sine waveform.
6 (C): the sine waveform in the side view is the same in period and phase as the sine waveforms in (A1) and (A2): the front view in FIG. 6, and the amplitude is slightly smaller. Also, the relationship is the same as that of the second embodiment with respect to the first embodiment except for the waveform.

Accordingly, when a large number of pipe members 41 and 42 are prepared, and the maximum amplitude portions 44 are brought into contact with each other and bound by the binding band 35, a frame structure 45 as shown in FIG. 8 can be formed.
The aesthetic property of the skeleton surface of the skeleton structure 45 is the same as that of the third embodiment. The elasticity against external force due to the wavy skeleton surface and the appearance of the aesthetic property are the same as those of the second embodiment. Is the same as

There are also two types of pipes used in the frame structure of this embodiment, and one of the pipes 51 is shown in FIG. 9 (A): front view and (B): side view and (C): plan view. 10 (A): front view, FIG. 10 (B): side view, and FIG. 10 (C): plan view. However, in this embodiment, for convenience, the pipe members 51 and 52 are drawn with thick lines in the drawings.
As is clear from the figures, each of the pipe members 51 and 52 is bent into a trapezoidal waveform having a constant amplitude centered on the linear axes 53 and 54, respectively, and has a direction perpendicular to the bending direction of the trapezoidal waveform over its entire length. It is bent in an arc shape.

Here, the trapezoidal waveform is similar to the trapezoidal waveform applied to the tube 11 in the first embodiment, and has a maximum amplitude section parallel to the linear axes 53 and 54 and ± 60 ° with respect to the linear axes 53 and 54. Although the inclined sections having the intersection angle are alternately continuous with the same length, the trapezoidal waveforms of the tube material 51 and the tube material 52 have a symmetrical relationship with each other with respect to the respective linear axes 53 and 54.
In addition, the arc-shaped bending process is a 1/4 arc-shaped bending, but the both end portions are straight pipe sections for joint connection.

Therefore, when a large number of the pipe members 51 and 52 are used, and the maximum amplitude sections of the trapezoidal waveforms of the tube members 51 and 52 are brought into opposition to each other and bound by the binding device 15, a skeleton as shown in FIG. The structure 55 can be configured.
This frame structure 55 constitutes a 1/4 arcuate arched frame wall surface. However, since the pipe members 51 and 52 are bent into a trapezoidal waveform, the frame wall surface having the honeycomb structure is formed in the same manner as in the first embodiment. It has become.

This framework 55, which is an arch-shaped framework wall with a honeycomb structure, is most suitable for a roof portion such as a frame for extending a curtain body, and forms a larger area indoor space with a simple framework. It becomes possible.
In this embodiment, a case is described in which each of the pipe members 51 and 52 is subjected to a trapezoidal waveform bending process, but may be formed into another waveform such as a sine waveform.

  Further, the pipe material 51 and the pipe material 52 are subjected to bending processing into a trapezoidal waveform or a sine waveform having a constant amplitude and a constant cycle around the arc bending surface by superimposing the bending of the trapezoidal waveform and the bending of the arc shape. In this way, as shown in the skeleton structure 56 of FIG. 12, a wavy arch-shaped skeleton wall surface is provided. As in the case of the second and fourth embodiments, the skeleton surface is given a certain elasticity, Express the aesthetics of

This embodiment relates to a mechanism in a case where the skeleton structure according to each of the above-described embodiments is connected to each other at the ends of each tube.
As a condition for the connection, both end surfaces of each tube material in the framed structure are aligned on two surfaces perpendicular to the linear axis which is the center of the amplitude of the trapezoidal waveform or the sine waveform, and each tube material on the two surfaces. It is assumed that the positions of the end faces are the same. However, the frame structures 16, 26, 34, 45, 55, and 56 of the above-described first to fifth embodiments are shown in FIGS. 11 and FIG. 12, all the prerequisites are satisfied.
Therefore, here, the case where the skeleton structures 16 according to the first embodiment are connected will be described as an example, but the same applies to the skeleton structures 26, 34, 45, 55, and 56 of the other embodiments 2 to 5. is there.

First, as shown in FIG. 2 (C), at both end surfaces of each tube 11 in the frame structure 16, the end surfaces of the two tubes 11 are adjacently paired, and are evenly spaced. They are arranged in a line.
Therefore, when a pair of skeleton structures 16 of FIG. 2 are prepared and their ends are opposed to each other, as shown in FIG. 13, the end faces of all the tube materials 11 of each skeleton structure 16a and 16b are opposed to each other. In this embodiment, the opposed end faces are connected by the pipe joint 60.

As the pipe joint 60, those shown in FIGS. 14A, 14B and 14C can be used.
The three types of pipe joints 60a, 60b, 60c in FIG. 14 include two short round rods 61, 62 having a diameter to be fitted in the pipe of the pipe material 11, and the two round rods 61, 62 having the same length. And a thin plate-like flange 63 fixed in a parallel state at an intermediate position in the direction with a spacing slightly larger than twice the tube wall thickness of the tube material 11, and the outer edge of the flange 63 viewed in a plan view. The shape is such that the central part of an ellipse enclosing the end faces of the two pipe members 11 is slightly constricted.
In any of the pipe joints 60a, 60b, 60c, the portions of the round bars 61, 62 above and below the flange 63 are inserted into the pipe from the end faces of the pair of pipes 11 of the two framed structures 16a, 16b to be connected. The frame members 16a and 16b are connected to each other with the end faces of the tube material 11 sandwiching the flange 63 therebetween.
However, the pipe joint 60a of (A) is a simple round bar 61, 62 only having both ends formed into a hemispherical surface, whereas the pipe joint 60b of (B) has the upper and lower portions of the flange 63 of each round bar 61, 62. The holes 64 and 65 are formed in the middle position of each part in the arrangement direction of the round bars 61 and 62, respectively, and are located above and below the flange 63 of each round bar 61 and 62 in the pipe joint 60c of (C). U-shaped grooves 66, 67 are formed all around the middle position of each part.

By the way, as can be inferred from FIG. 13, even in a state where the frame structures 16 a and 16 b are connected by the pipe joint 60, the tying tool 15 is applied to the connecting portion, so that the connecting portion and the other tying portions have an external appearance. It is desirable to be indistinguishable.
The tying member 15 of FIG. 3 simply has a tying function only for two pipe materials. For example, when the tubing material is made of aluminum, the band plate 15a has an inward constriction as seen in FIG. Without having it, the binding device 15 is provided with a binding function as well as a binding function by providing a large number of small conical projections for biting the outer peripheral surface of the tube material 11 on the inner surface of the band plate 15a. In this case, a pipe joint 60a (FIG. 14A) having only the function of simply positioning the end faces of the pipe material and bringing the pipe material into abutting state via the flange 63 is sufficient.

On the other hand, when such a binding device is not used, the pipe joint 60b shown in FIG. 14B and the pipe joint 60c shown in FIG. 14C are used.
FIG. 15 is a cross-sectional view of a main part showing a connected state when the pipe joint 60b is applied.
When the upper and lower portions of the flange 63 of the round bars 61 and 62 are respectively fitted into two adjacent pipes 11 at the ends of the respective frame structures 16a and 16b, a pair of upper and lower pipes 11 facing each other are fitted. The two are positioned by the round bars 61 and 62 and are abutted through the flange 63.In advance, the tube 11 has holes at positions corresponding to the holes 64 and 65 of the round bars 61 and 62 in the abutted state. Has been drilled.
Therefore, two retaining pins 68 corresponding to a length approximately twice as large as the diameter of the tube 11 are respectively inserted into upper and lower through holes formed by the hole of the tube 11 and the holes 64, 65 of the round bars 61, 62. If it is inserted and the tie 15 is attached in that state, the retaining pin 68 is prevented from coming off, and a simple and rational pipe joint mechanism can be realized.

The pipe joint 60c shown in FIG. 14C is used in a case where a structure formed by connecting the frame structure 16 is installed semi-permanently.
The upper and lower portions of the flanges 63 of the round bars 61 and 62 are respectively fitted into two adjacent pipes 11 at the ends of the respective frame structures 16a and 16b, and a pair of upper and lower pipes 11 are vertically opposed to each other. Positioning and abutting of each other are performed in the same manner as in the case of the aforementioned pipe joints 60a and 60b.
In the pipe joint 60c, in this state, the portions corresponding to the grooves 66, 67 of the round bars 61, 62 in each pipe material 11 are crimped from the outside to prevent the pipes 11 from coming off.

On the other hand, when the skeleton structure 16 is made of a bar instead of a tube, a bar joint 70 as shown in FIG. 16 can be used.
In this rod joint 70, a partition plate 72 is provided at an intermediate position in the axial direction of the oval cylindrical body 71, and at both ends in the longitudinal direction of the ellipse at the upper and lower walls 73, 74 of the partition plate 72. Holes 75 and 76 are formed.
Here, the ellipse of the cylindrical body 71 has a shape enclosing the outer periphery thereof in a state where two bars are adjacent to each other in parallel.

Therefore, in the case where a bar is used instead of the pipe 11 in the skeleton structures 16a and 16b in FIG. 13, as shown in FIG. 17, the upper and lower skeleton structures in which two rods 77 are adjacent to each other are used. Each end of the body is connected by a rod joint 70.First, the ends are fitted in the upper and lower walls 73, 74 of the partition plate 72 of the rod joint 70, and the respective ends are inserted through the partition plate 72. It is in the hit state.
A hole 78 is drilled at a position corresponding to the holes 75 and 76 of the bar joint 70 in a state in which the rod member 77 is fitted inside the bar joint 70 in advance. A retaining pin 79 having a length corresponding to the longitudinal direction of the ellipse of the bar joint 70 is inserted through the hole 76 of the bar member 77 and the bar 78.
Also, the binding band 35 is attached to the retaining band 79 so as to prevent the retaining pin 79 from coming off.

By using the pipe joints 60a, 60b, 60c and the rod joint 70 as described above, the respective frame structures 16, 26, 34, 45, 55, 56 shown in the first to fifth embodiments can be connected, It is possible to build a frame for erecting curtains such as garages and agricultural greenhouses with some degree of freedom.
For example, FIG. 18 shows a curtain body erection frame 80 for an agricultural greenhouse or greenhouse, and FIG. 19 shows a curtain body erection frame 81 for a garage. It can be configured by connecting the frame structure 55 of the fifth embodiment with pipe joints 60 (60a, 60b, 60c).

  INDUSTRIAL APPLICABILITY The framework structure of the present invention can be used for a simple curtain-covering frame such as a garage, an agricultural greenhouse, or a temporary tent.

11 ... Tube, 12 ... Linear axis, 13 ... Maximum amplitude section, 14 ... Inclination section, 15 ... Bundling tool, 15a ... Band plate, 15b ... Hook section, 15c ... Engaging section, 16,16a, 16b ... Frame structure , 21 ... tube material, 22 ... linear axis, 23,23 '... maximum amplitude section, 24 ... inclination section, 25 ... tube material, 26 ... frame structure, 31 ... tube material, 32 ... linear axis, 33 ... maximum amplitude part, 34 … Frame structure, 35… tie band, 41,42… tube material, 43… linear axis, 44… maximum amplitude part, 51,52… tube material, 53,54… linear axis, 55,56… frame structure, 60, 60a, 60b, 60c… Fitting, 61… Round bar, 62… Round bar, 63… Flange, 64… Hole, 65… Hole, 66,67… U-shaped groove, 68… Retaining pin, 70… Bar fitting , 71 ... cylindrical body, 72 ... partition plate, 73, 74 ... wall, 75, 76 ... hole, 77 ... bar, 78 ... hole, 79 ... retaining pin, 80, 81 ... curtain body extension frame.

Claims (4)

While being bent into a first plane waveform having a constant amplitude centered on the linear axis, and being bent in a direction perpendicular to the bending direction of the first plane waveform in all or some sections , And a first pipe material or a rod material which is superimposed on the arc-shaped bending process and is bent into a second plane waveform having a constant amplitude and a constant period around the arc-shaped bending surface, and the first plane waveform is A large number of second pipes or rods, each of which is different from the first pipe or rod only in that the waveform is a plane waveform symmetrical with respect to the linear axis, are used in the first pipe or bar. and characterized by being configured to face by framework by tying oppositely brought into contact with the maximum amplitude portion of the symmetric plane wave at a maximum amplitude portion and the second tubular material or the bar of the first plane wave Skeletal structure. The plane wave is claim 1 and an inclined section having an angle of intersection ± 60 ° relative to the linear axis parallel to the maximum amplitude section with respect to the linear axis is continuous trapezoidal waveform alternately at the same length framework structure according to. The skeleton structure according to claim 1, wherein the planar waveform is a sine waveform. Both end surfaces of the tube or the bar are aligned in a perpendicular dihedral on the linear axis, and said claim 1 the position of the end surface of each tube or each bar on the top two sides were the same, claim A skeleton structure according to claim 2 or claim 3 .