JPH0630966Y2 - Space truss - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention relates to a three-dimensional truss used for a roof of a porch or a pier, a temporary roof of an exhibition site, a canopy of a building, a pergola, and the like.

2. Description of the Related Art In a conventional three-dimensional truss, as disclosed in Japanese Examined Patent Publication No. 52-25168, vertical and horizontal upper chords and vertical and horizontal chords which are arranged so as to cross each other and have mutually intersecting points. It consists of a lower chord and a zigzag continuous diagonal timber that extends in the diagonal direction of the grid and connects the intersection of the upper chord and the intersection of the lower chords. It is known that the connecting parts of the vertical and horizontal chord members and the diagonal members are flattened in order to overlap the three members of the diagonal members and the diagonal members and to connect them with bolts and nuts.

Problems to be Solved by the Invention Since the zigzag continuous diagonal members extend in the diagonal direction of the grid, there is an inconvenience that it is not possible to make all the diagonal members the same length. Further, the width of the flat connecting portion is naturally larger than the diameter of the pipe, and it is unavoidable that the flat connecting portion has a shape protruding to both sides from the other portions of the pipe, and therefore the appearance is bad.

It is an object of the present invention to provide a three-dimensional truss that can use continuous diagonal members of the same length and that has a good appearance of the connecting portions of the vertical and horizontal chord members, the diagonal members, and the three chord members.

Means for Solving the Problems In order to achieve the above-mentioned object, the space truss according to the present invention has vertical and horizontal lower chord members and vertical and horizontal lower chord members which are crossed and interconnected to form a grid pattern. Between the vertical and horizontal upper chords and the lower chords and upper chords arranged inside are arranged such that those extending vertically and horizontally alternately in the same direction as above are arranged and connected to each other. It is composed of flat and zigzag continuous diagonal members that are sequentially interposed and connected to each other, and the lower chord member and the upper chord member arranged inside have vertical portions, and when viewed from the side, The lower connecting portion is formed in a substantially inverted trapezoidal shape, and the upper connecting portion is formed in a substantially trapezoidal shape, and the substantially inverted trapezoidal connecting portions of adjacent diagonal members are overlapped with each other via the vertical portion of the lower chord member and the upper chord member Abbreviation for diagonal members that are adjacent to each other with a vertical portion The trapezoidal connecting portions are stacked, and the front and rear ends of the connecting portion are twisted to form a twisted portion.

Action The three-dimensional truss of the present invention has vertical and horizontal lower chord members which are crossed and connected to each other so as to form a grid, and which extend above and below the vertical and horizontal chord members alternately in the same direction in both vertical and horizontal directions. The vertical and horizontal upper chord members which are arranged so that they are on the inner side and are connected to each other, and the flat chord member which is sequentially interposed between the lower chord member and the upper chord member arranged inside and connected to them. Since it is made up of a zigzag continuous diagonal member, all diagonal members used may have the same size.

Also, the lower chord member and the upper chord member arranged inside have vertical portions, and when viewed from the side, the lower connecting portion of the diagonal member is formed in a substantially inverted trapezoidal shape, and the same connecting portion is formed in a substantially trapezoidal shape. Since the substantially inverted trapezoidal connecting portions of the diagonal members that are adjacent to each other are overlapped via the vertical portion of, and the substantially trapezoidal connecting portions of the diagonal materials that are adjacent to each other are overlapped via the vertical portion of the upper chord member, The connecting portion has the same shape as the other portions, and the connecting portion of the diagonal member does not protrude from the vertical portion of the chord member.

Furthermore, since the front and rear ends of the connecting portion are twisted to form a twisted portion, the height of the vertical and horizontal upper chord members with respect to the vertical and horizontal lower chord members can be changed depending on the degree of twist of the twisted portion.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

The three-dimensional truss shown in the figure is a vertical and horizontal lower chord member that is crossed and connected to each other so as to form a grid pattern.
(1) (2) and vertically and horizontally lower chords (1) (2) are arranged alternately and vertically and horizontally in the same direction, and they are arranged so that they are on the inside and are connected to each other. The vertical and horizontal upper chords (3) and (4) and the lower chords (1) and upper chords (3) arranged inside are sequentially interposed and connected to each other. The lower chord member (1) and the upper chord member (3), which are arranged inside, have vertical portions (1a) and (3a).
As seen from the side, the lower connecting part (6) of the diagonal member (5) is formed in an inverted trapezoidal shape, and the same connecting part (7) is formed in a trapezoidal shape.
The inverted trapezoidal connecting portions (6) of the diagonal members (5) that are adjacent to each other via the vertical portion (1a) are overlapped, and the diagonal members (5 that are adjacent to each other via the vertical portion (3a) of the upper chord member (3) are overlapped. ) Trapezoidal connecting part (7) is overlapped, and the front and rear ends of the connecting parts (6) and (7) are twisted to form a twisted part.
(8) and (9) are formed.

Lower vertical chords (1) and upper horizontal chords (4) are odd, horizontal lower chords (2) and upper vertical chords (3) are even, and vertical and horizontal lower chords (1) (2) are vertical and horizontal upper chords (3). ) (4), one more than each, and when viewed from the plane, each vertical upper chord (3) is exactly in the middle of the vertical lower chords (1) next to each other, and each horizontal upper chord (4) is It is arranged so that it is located exactly in the middle of the transverse lower chord members (2) adjacent to each other. The vertical lower chords (1) and the upper vertical chords (3) are both T-shaped with the same cross section and have vertical portions (1a) (3a) and horizontal portions (1b) (3b), and vertical portions (1a) (3a) is hollow and has multiple horizontal bulkheads (1
0). Both the horizontal lower chord (2) and the horizontal upper chord (4) use C-shaped channel material with the same cross section.
The opening is oriented so that the lower horizontal chord (2) faces downward and the upper horizontal chord (4) faces upward. Then, it is fastened to the horizontal portions (1b) and (3b) of the vertical crossed chords (1) and (3) with set screws (12) via washers (11). The connecting diagonal member (5) is hollow with a rectangular cross section and has one partition wall (13). Diagonal members (5) adjacent to each other via the vertical part (1a) of the lower vertical chord member (1)
Where the inverted trapezoidal connecting parts (6) of (1) are overlapped, a cover (14) having a reverse U-shaped cross section and opposite pentagonal side walls is covered from above and tightened with bolts and nuts (15). ing. Where the trapezoidal connecting portions (7) of the diagonal members (5) that are adjacent to each other are overlapped with each other through the vertical portion (3a) of the upper vertical chord member (3), the cross section is U-shaped and both side walls are pentagonal. The cover (16) is covered from below and fastened with bolts and nuts (15).

In this example, all chords (1)-(4) and diagonals (5)
For this, an aluminum extruded profile is used.

In the above embodiment, the lower chords (1) and (2) have a larger number than the upper chords (3) and (4), but when using a space truss for a pergola, turn this upside down. It is also possible to use the space truss vertically.
Further, the above odd / even relationship between the lower chords (1) (2) and the upper chords (3) (4) can be reversed, or both may be odd depending on the form of the space truss. Both may be even numbers.

Further, the inverted trapezoidal connecting portion (6) of the diagonal member (5) may be close to an inverted triangular shape, and the same trapezoidal connecting portion (7) may be close to a triangular shape.

Effect of the Invention According to the three-dimensional truss of the present invention, since all diagonal members to be used may have the same size, it is much more difficult than the conventional one in which the three-dimensional truss cannot be assembled unless the diagonal members of different dimensions are used. It is convenient.

Further, the connecting portion of the chord member has the same form as the other portions, and the connecting portion of the diagonal member does not protrude from the vertical portion of the chord member, so that the appearance is good.

Furthermore, since the height of the vertical and horizontal upper chord members with respect to the vertical and horizontal lower chord members can be changed depending on the degree of twist of the twist portion, there is an advantage that the thickness itself of the space truss can be adjusted relatively easily.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is an enlarged sectional view taken along the line II of FIG. 2, FIG. 2 is a plan view, FIG. 3 is a side view, and FIG. 4 is a front view. FIG. 5 is an enlarged perspective view of a zigzag continuous diagonal member, FIG. 6 is an enlarged detailed cross-sectional view taken along the line VI-VI of FIG. 2, and FIG. 7 is an enlarged view of a connecting portion between vertical and horizontal lower chord members and diagonal members. It is a detailed perspective view. (1) …… Vertical lower chord, (2) …… Horizontal lower chord, (3) …… Vertical upper chord, (4) …… Horizontal upper chord, (5) …… Diagonal, (6) (7) ...... Connecting parts of diagonal members, (8) (9) ...... Twisted parts.

Claims (1)

[Scope of utility model registration request] 1. Vertical and horizontal lower chord members (1) and (2) which are crossed and connected to each other so as to form a grid pattern,
The vertical and horizontal upper chords (3) (3), which are arranged above and below the vertical and horizontal lower chords (1) (2), are arranged alternately and vertically in the same direction, and are connected to each other. Four)
And a flat and zigzag continuous diagonal member (5) that is sequentially interposed between the lower chord member (1) and the upper chord member (3) arranged inside and connected to them, and is arranged inside The lower chord member (1) and the upper chord member (3) have vertical portions (1a) (3a), and when viewed from the side, the lower connecting portion (6) of the diagonal member (5) has a substantially inverted trapezoidal shape, Same as above, the connecting portions (7) are formed in a substantially trapezoidal shape, and the connecting portions of the diagonal members (5) adjacent to each other through the vertical portion (1a) of the lower chord member (1) are substantially inverted trapezoidal connecting portions.
(6) is overlapped, the substantially trapezoidal connecting portion (7) of the diagonal members (5) adjacent to each other via the vertical portion (3a) of the upper chord member (3) is overlapped, and the connecting portion (6) ( The front and rear ends of 7) are twisted and twisted
Space truss with (8) (9) formed.