JPH09195380A - Truss - Google Patents

Abstract

PROBLEM TO BE SOLVED: To upgrade more enhancedly workability which connects and fixes or disassembles in a binding area of a chord member or a diagonal member. SOLUTION: Connection areas 11 and 13 are formed on the end of a chord member 3 and a diagonal member 9. Each of the connection areas 11 and 13 is laid out so that they may be opposed to each other and placed one upon the other by way of a spacer 23. Washer 31 and 33, which allow four connection shaft rods 29 to be erected area placed in contact with both upper and lower surfaces of the doubled area. The shaft rods 29 are inserted into through holes 15 and 17 of each of materials 3 and 9 while they are inserted into connecting holes 25 and 26 of the spacer 23, thereby holding the chord member 3 and the diagonal member 9 in a fixed state. A fixing bolt 39 is inserted into a fixing hole 27 of the doubled area and the washers 31 and 33 and fastened wit a hut 41, thereby tightening and fixing the chord member 3, the spacer 23 and the diagonal member 9 and the washers 31 and 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a truss used for various structural materials and interior products.

[0002]

2. Description of the Related Art For example, as disclosed in Japanese Examined Patent Publication No. 5-54545, an upper lattice and a lower lattice composed of vertical and horizontal chords divided for each intersection and a space between the intersections of the chords in both lattices are provided. A truss composed of diagonal members divided at each intersection connecting with each other is known. In the conventional truss described above, at the joint between the lattice and the diagonal member, the vertical and horizontal chord members that are in the intersecting state and the diagonal members that are in the abutting state on the same plane are polymerized via a spacer. , These chord materials,
A washer is abutted on the upper and lower surfaces of the overlapped portion of the spacer and the diagonal member, and the coupling shaft is inserted into each of the plurality of coupling holes penetrating the washer and the chord member, the spacer and each diagonal member, and the center of the joint portion is inserted. The washer, the chord member, the spacer, and the diagonal member are integrally fastened and fixed by inserting the fixing bolt into the fixing hole and tightening the nut.

Such a truss has a plurality of connecting holes, which penetrate through the overlapping portion of the chord member, the spacer and the diagonal member, and the washers abutting on the upper and lower surfaces of the overlapping portion. Since they are connected by inserting the shaft rod, when connecting and fixing the vertical and horizontal chords, diagonal members and spacers in the joint, or dismantling, insert each member into the connecting shaft rod in a certain order, or It is necessary to remove each member from the connecting shaft rod in the opposite fixed order. Therefore, there is no degree of freedom in the work of connecting and fixing and disassembling at the above-mentioned connecting portion,
This can make the work complicated and difficult.For example, even when replacing some damaged chords and diagonal members, it is necessary to disassemble the entire joint, and workability is desired to be improved. It is rare.

[0004]

DISCLOSURE OF THE INVENTION The technical problem of the present invention resides in the above-mentioned connecting portion between the chord member and the diagonal member of the truss.
It is to further improve the workability of connecting and fixing or disassembling them. Another technical problem of the present invention is to simplify and at the same time commonize the parts used for connecting the chord members and the diagonal members at their intersections, thereby simplifying and reducing the manufacturing cost thereof.

[0005]

In order to solve the above-mentioned problems, the truss of the present invention has an upper lattice and a lower lattice composed of vertical and horizontal chords divided for each intersection, and between the intersections of the chords in both lattices. It is composed of diagonal members divided at each intersection that connects with each other, and at the joints between these chord members and diagonal members, the longitudinal and lateral chord members and the end portions of each diagonal member are flattened to form a joint. Then, arranging the connecting parts on the same surface in an abutting state, superposing the connecting parts of the chord members and the diagonal members through the spacers, and arranging them on the upper and lower surfaces of the superposed parts of the chord members, the spacers and the diagonal members Abutting a washer made up of four connecting shafts corresponding to the connecting parts of the chords or diagonal members, inserting the shafts into the through holes of the connecting parts of the respective materials, and By holding the chords and diagonal members in a fixed state by fitting them into the connection holes formed in the lower surface, By inserting the fixing bolts into the fixing holes that penetrate the center of the washer on the overlapping portion and the upper and lower surfaces thereof and tightening the nuts, those chord members, spacers and diagonal members, and the washer are integrally tightened and fixed. It is characterized by having done.

Further, four connecting shafts corresponding to the connecting portions of the chord members and the diagonal members, which are erected on the upper and lower surfaces of the spacer, are penetrated through the connecting portions of the chord members and the diagonal members. A washer is inserted into each of the holes, and a washer made by drilling a connecting hole corresponding to the connecting shaft rod is brought into contact with the upper and lower surfaces of the polymer of the chord member, the spacer, and the diagonal member, and the shaft is inserted into the connecting hole. By inserting the rod, the chord member and the diagonal member can be held in a fixed state.

Further, it is appropriate that the spacer has a thickness required for the axes of the chord members and the diagonal members to intersect at a point on the center line of their joint.

In the truss of the present invention having the above structure, four connecting shafts corresponding to the connecting portions of the chord members and the diagonal members are erected on the upper and lower surfaces of the upper and lower washers or the spacer, and the spacer By connecting holes for fitting the shaft rods on the upper and lower surfaces or the upper and lower washers, the connection between each chord member and diagonal member and the spacer can be performed in the upper and lower separate steps, that is, respectively. In the washer or spacer, the shaft rod is inserted into the through hole of the connecting portion of each material, and the tip of the shaft rod is inserted into the connecting hole formed in the upper and lower surfaces of the spacer or the upper and lower washers, so that the chord material and the diagonal By holding each of the materials individually in a fixed state, and then inserting a fixing bolt into the fixing hole and tightening the nut, the overlapping portion and the washer can be easily and integrally fastened,
Since it can be fixed, a degree of freedom can be given to the assembly work.

In particular, even when the nut for the fixing bolt is unscrewed, if the spacer for holding the chord member or the diagonal member and the washer are temporarily held by some means, the material and the spacer will be separated from each other. When the connected state is maintained and some chords or diagonals need to be replaced due to damage,
It is possible to easily replace each chord member or diagonal member by simply removing the washer at the relevant portion, that is, by only minimally disassembling and disconnecting.

Further, the upper and lower washers can be made common by making four short connecting shaft rods or four connecting holes provided, and the spacer can be shared with the chord member connecting side as required. It can be configured by forming the diagonal member connecting side with a simple and common component and connecting them together,
As a result, their manufacture can be simple and inexpensive.

Further, since the spacer has a thickness necessary for the axes of the chord members and the diagonal members to intersect at a point on the center line of their joint, the spacers act on the respective chord members and the diagonal members. Since the acting force in the axial direction is concentrated on one point of the center line in the joint, no moment is generated in the joint, and twisting or deformation of the truss based on this moment hardly occurs.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 show the overall construction of an embodiment of a truss according to the present invention. This truss has an upper lattice 1 made of vertical and horizontal chord members 3 and a lower portion made of vertical and horizontal chord members 7 similarly. Lattice 5 and both of these Lattices 1, 5
Of the chord members 3 and 7 are connected to each other by diagonal members 9 which are connected to each other. And they are connected at each intersection by the methods detailed below.

That is, FIG. 3 and FIG. 4 show an example of the structure of the connecting portion between the chord member 3 and the diagonal member 9 of the upper lattice 1 (first embodiment).
The flat parts of the vertical and horizontal chord members 3 and the diagonal members 9 formed by the pipes are flattened to form the connecting portions 11 and 13.
Through-holes 15 and 17 are formed in each of the connecting portions 11 and 13, and arcuate notches 19 and 21 that form a fixing hole at the center of the joint portion at the center of the tip portion.
Is cut out. And the connecting portion 1 of each material 3, 9
1, 1 and 13 are arranged in an abutting state on the same plane, and the connecting portions 11 and 13 of the chord member 3 and the diagonal member 9 are polymerized via the spacer 23.

The spacer 23 is in the form of a disk that abuts the connecting portions 11 and 13 at the intersection of the chord member 3 and the diagonal member 9 so as to straddle the upper and lower surfaces of the connecting members 11 and 13, respectively. Four connecting holes 25 and 26 corresponding to the through holes 15 and 17 of the member 3 or the diagonal member 9 and the arcuate notches 19 and 21.
And one fixing hole 27 corresponding to the fixing hole formed by. The spacer 23 has four connection holes 25 equally arranged on the upper surface thereof, and has a phase difference of 45 ° with respect to the connection holes 25 so that the four connection holes 2 are formed on the lower surface.
6 are arranged equally, but this spacer 23 is divided into two at the upper and lower intermediate portions and formed by two members of the same shape in which four connecting holes are equally arranged, and they are welded, bonded, It is also possible to join the non-rotatable members by shifting the phase of the connecting hole by 45 ° by other means. With this structure, the spacer 23 can be formed at a low cost by using common parts having a simplified shape.

By interposing the spacer 23 between the chord member 3 and the diagonal member 9, as shown in FIG.
The axes of the vertical and horizontal chord members 3 and the diagonal members 9 are made to intersect each other at a point P on the center line in the joint portion, so that when an external force in the axial direction acts on each of these members, their acting force is set to the above point. By concentrating on P, generation of moment at the joint is prevented.

These chord members 3, spacers 23 and diagonal members 9
Washers 31, 33 having four connecting shaft rods 29 corresponding to the through holes 15, 17 of the connecting portions 11, 13 of each chord member 3 or diagonal member 9 are erected on the upper and lower surfaces of the overlapping portion. The shaft rod 29 is inserted into the through holes 15 and 17 of each material, and the tip end of the shaft rod 29 is formed in the upper and lower surfaces of the spacer 23, and the connecting holes 25 and 2 are formed.
Each of them is held in a fixed state by being fitted into the washer 6, and the chord member 3 is attached to the center of the washers 31 and 33.
And fixing holes 35 and 37 corresponding to the respective fixing holes formed by the notches 19 and 21 of the diagonal member 9. And
The fixing holes 35 and 37 and the notches 19 of the materials 3 and 9,
The fixing bolts 39 are inserted into the respective fixing holes formed by 21 and the fixing holes 27 of the spacer 23, and the nuts 41 are formed.
The chord member 3 and the spacer 23 by screwing
Also, the diagonal member 9 and the washers 31, 33 are integrally fastened and fixed.

The truss having the above-mentioned structure is provided with upper and lower washers 3
1, 33 include four connecting shaft rods 2 corresponding to the through holes 15 and 17 in the connecting portions 11 and 13 of the chord member 3 and the diagonal member 9 described above.
9 are erected, and four connecting holes 25 and 26 for fitting the shaft rods 29 are bored in the upper and lower surfaces of the spacer 23, whereby each chord member 3 and diagonal member 9 and the spacer 2 are formed.
3 and 3 can be performed in separate upper and lower steps, that is, in each washer 31, 33 or spacer 23, the shaft 29 is connected to the through hole 1 of the connecting portion of each material 3, 9.
5 and 17, and the tips thereof are fitted into the connection holes 25 and 26 formed in the upper and lower surfaces of the spacer 23, whereby the chord member and the diagonal member are individually held in a fixed state, and then the above-mentioned Fixing holes formed by notches in each material 3, 9 and fixing holes 2 for the spacer 23 and washers 31, 33
The fixing bolt 39 is inserted into 7, 35 and 37 and screwed with the nut 41, so that the chord member 3 and the spacer 23
Since the diagonal member 9 and the upper and lower washers 31 and 33 can be easily fastened and fixed integrally, a degree of freedom can be given to the assembly work.

In particular, the nut 1 for the fixing bolt 15
Even when the screw 6 is unscrewed, if the spacer 23 holding the chord member 3 or the diagonal member 9 and the washers 31, 33 are temporarily held by some means, each member 3, 9 and the spacer 23 Even when some of the chord members 3 or the diagonal members 9 need to be replaced due to damage or the like, the washer 31 or 33 at the corresponding position is removed, that is, the minimum disassembly, Each chord member 3 or diagonal member 9 can be easily replaced by simply releasing the connection.

Further, as shown in FIG. 3, since the acting force in the axial direction acting on each chord member 3 and diagonal member 9 is concentrated at one point P on the center line of the joint, a moment is generated at the joint. do not do. Therefore, the truss is less likely to be twisted or deformed due to this moment.

The structure of the connecting portion between the lower lattice 5 and the diagonal member 9 is substantially the same as the structure of the connecting portion between the upper lattice 1 and the diagonal member 9 described above except that the structure is upside down. , Description is omitted to avoid duplication. Further, in the joint portion around the truss, the number of the chord members 3 and the diagonal members 9 is smaller than that in the intermediate joint portion described above, but they are connected to the lacking portions of the chord members 3 and the diagonal members 9. By using the auxiliary spacers having the same shape and the same thickness as the portions 11 and 13, they can be joined in the same manner as the above-mentioned case.

5 and 6 show another structural example (second embodiment) of the connecting portion. In this second embodiment, the spacer 73 is a spacer piece of the same shape which is divided into upper and lower parts. The case where 74 and 74 are joined and used is shown.
These spacer pieces 74 are respectively provided with four connecting shaft rods 79, on a rectangular seat plate 74a that abuts the connecting portion 11 of each chord member 3 or the connecting portion 13 of each diagonal member 9 so as to straddle each other. 80
Are erected in an equal arrangement, and their shafts 79, 80
The spacers 73 are formed by shifting the phases of the two by 45 ° and joining the back surfaces by welding, bonding, or other means to integrate them. Therefore, the spacer 7
3 is a connecting portion 11 of the chord member 3 and the diagonal member 9 on the upper and lower surfaces,
Four connecting shafts 79 and 80 are erected at positions corresponding to the through holes 15 and 17 of the shaft 13, respectively. Then, by interposing the spacer 73 between the chord member 3 and the diagonal member 9, as shown in FIG. 5, the axial lines of the longitudinal and lateral chord members 3 and the diagonal member 9 are formed at a point P on the center line in the joint portion. I'm trying to cross.

On the other hand, the washers 81 and 83 which come into contact with the upper and lower surfaces of the chord member 1, the spacer 73 and the overlapping portion of the diagonal member 9 have connecting holes corresponding to the shaft rods 79 and 80. The overlapping portion of the chord member 3, the spacer 73 and the diagonal member 9 is the spacer 7
Each of the four connecting shaft rods 79, 80 erected on the upper and lower surfaces of No. 3
Through the through holes 15 and 17 formed in the connecting portions 11 and 13 of the chord member 3 and the diagonal member 9, respectively, and correspond to the shaft rods 79 and 80 of the spacer 73 on the upper and lower surfaces of the overlapping portion. By inserting the washers 81 and 83 each having four connecting holes 75 and 76 formed therein, by inserting the shaft rods 79 and 80 into the connecting holes 75 and 76, and fastening them with the bolt 39 and the nut 41. Each is held in a fixed state.

Since the other construction, operation and effect of the truss of the second embodiment are substantially the same as those of the first embodiment, the same or corresponding parts will be denoted by the same reference numerals and their description will be omitted. Omit it.

In the first and second embodiments, the upper and lower washers are provided with four short connecting shafts or four connecting holes to simplify the parts and make them common. The spacer can also be configured by forming the connecting side of the chord member 3 and the connecting side of the diagonal member 9 with simple and common parts and connecting them to each other, if necessary.
As a result, their manufacture can be simple and inexpensive.

[0025]

As described above, according to the truss of the present invention,
In the joint portion of the chord member and the diagonal member, workability for connecting and fixing or disassembling them can be further improved. More specifically, four connecting shafts corresponding to the connecting portions of the chord members and the diagonal members are erected on the upper and lower washers or the upper and lower surfaces of the spacer, and the upper and lower surfaces of the spacer or the upper and lower washers are connected to each other. By connecting holes for inserting the shaft rods, it is possible to connect the chord members and diagonal members to the spacers in separate upper and lower steps, that is, in the respective washers or spacers, Of the chords and diagonal members individually by fixing the chords and diagonal members by inserting the ends into the through holes of the connecting part of each material and inserting the tips into the connecting holes formed in the upper and lower surfaces of the spacer or the upper and lower washers. Then, by inserting the fixing bolt into the fixing hole and tightening the nut, the overlapping portion and the washer can be easily fastened and fixed integrally, so that there is no freedom in the assembly work. With It can be.

In particular, even when the nut for the fixing bolt is unscrewed, if the spacer and the washer holding the chord member or the diagonal member are temporarily held by some means, the respective members and the spacer will be secured. When the connected state is maintained and some chords or diagonals need to be replaced due to damage,
It is possible to easily replace each chord member or diagonal member by simply removing the washer at the relevant portion, that is, by only minimally disassembling and disconnecting.

[Brief description of the drawings]

FIG. 1 is a plan view showing the overall structure of a truss according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is an enlarged sectional view of a main part of the truss in the first embodiment of the present invention.

FIG. 4 is an exploded perspective view of FIG.

FIG. 5 is an enlarged sectional view of an essential part of the truss in the second embodiment of the present invention.

FIG. 6 is an exploded perspective view of FIG.

[Explanation of symbols]

 1 upper lattice 3,7 chord member 5 lower lattice 9 diagonal member 11,13 connecting part 15,17 through hole 19,21 notch 23,73 spacer 25,26,75 connecting hole 27 fixing hole 29,79,80 connecting shaft Rod 31, 33, 81, 83 Washer 39 Fixing bolt 41 Nut

Claims (3)

[Claims] 1. An upper lattice and a lower lattice composed of vertical and horizontal chords divided at each intersection, and diagonal members divided at each intersection for interconnecting the intersections of the chords in both lattices. At the joints between these chords and diagonal members, the vertical and horizontal chords and the ends of each diagonal member are flattened to form joints, and the respective joints are placed in abutment on the same plane. The connecting parts of the chords and diagonal members via the spacers, and four connecting parts corresponding to the connecting parts of the chord members or the diagonal members are formed on both upper and lower surfaces of the overlapping portions of the chord members, the spacers and the diagonal members. A shaft washer is abutted against the washer, the shaft is inserted into the through hole of the connecting portion of each material, and the spacer is inserted into the connecting hole formed in the upper and lower surfaces of the spacer to thereby secure the chord material and Hold the diagonal members in a fixed state, and pierce through the center of the washer on the above-mentioned overlapping part and its upper and lower surfaces. By nut tightened by inserting the fixing bolt to the fixing hole, their chords, and the spacer and diagonal members, fastening a washer integrally fixed, trusses, characterized in that. 2. An upper lattice and a lower lattice composed of vertical and horizontal chords divided for each intersection, and diagonal members divided for each intersection connecting the intersections of the chords of both lattices with each other. At the joints between these chords and diagonal members, the vertical and horizontal chords and the ends of each diagonal member are flattened to form joints, and the respective joints are placed in abutment on the same plane. Then, the connecting portions of the chord members and the diagonal members are overlapped with each other through the spacers, and the four connecting shafts corresponding to the connecting portions of the chord members and the diagonal members are provided on the upper and lower surfaces of the spacer, Insert through the through holes formed in the connecting portion of the timber and the diagonal member, respectively, and form the connecting holes corresponding to the shaft rod on the upper and lower surfaces of the overlapping portion of the chord member, the spacer, and the diagonal member. A washer is made to contact and a shaft rod is fitted in the connecting hole to fix the chord and diagonal members respectively. Hold the bolt and insert the fixing bolts into the fixing holes that pass through the center of the washer on the overlapping part and the upper and lower surfaces of the washer and tighten the nuts to integrally tighten the chords, spacers and diagonal members, and the washer. A truss characterized by being worn and fixed. 3. The truss according to claim 1 or 2, wherein the spacer has a thickness required for the axes of the chord members and the diagonal members to intersect at a point on the center line of their joints. Truss featuring.