JPS6321777B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a frame structure manufactured by joining the ends of a plurality of straight rods.

An example of this type of construction is shown in Fig. 1, but conventionally, the straight rod or straight pipe joint shown by the dotted circle part a in the same figure is connected to the end of the straight pipe 1 as shown in Fig. 2. Generally, the portion 2 is crushed, placed snugly against the bent disk 3, and then fixedly joined by riveting or welding. In this case, there was a disadvantage that processing and fixing of the end portion 2 of the straight pipe 1 required a high degree of skill. The present invention has been made as follows to solve this problem.

FIG. 3 shows the joining part of the straight pipe indicated by the dotted circle circle a, and six holes 5 are made in the steel disc 4, through which stranded steel wires are passed, legs 6 are provided radially, and the disc 4 is and forms a radiolarian-like high tensile strength bonding member. Glue or wedges may be used for fixing. Straight pipe 1
When connecting the end portion 2 of the above-mentioned connecting member 5,
Each of the book legs 6 is inserted and coupled into the hollow part of the straight pipe end. The connection may be made with adhesive or crimped using pliers. This strengthens the end 2 of the straight pipe 1. Furthermore, since the legs 6 are flexible, attachment to the straight pipe 1 is easy. In this case, although only five legs 6 are used, six holes 5 are made in the disk 4 and six legs 6 are provided because three U-shaped strands are passed through.

FIG. 4 shows another embodiment of the connecting member, in which the leg 6 is connected and fixed by a steel ring 7 and a wedge 8 to form the connecting member. In this case, the ring 7 corresponds to the disk 4, and a bundle of five hook-shaped stranded steel wires is passed through the center of the ring 7, and a wedge is driven into the center to secure it to the ring 7. The legs 6 may be made by twisting a metal wire and a non-metal wire, or may be made of a covered flexible electric wire made by covering a bundle of metal wires with a non-metal wire. The legs 6 may also be made of metal wire fibers, carbon or glass fibers, or non-metal high tensile strength fibers such as aramid fibers.

FIG. 5 shows a state in which plate-shaped connecting members 9 and 10 made of metal mesh are placed around the outer periphery of the end portion 2 of the straight pipe 1 connected by the connecting member according to the present invention, and the plate-like connecting members 9 and 10 are bonded and fixed to each other with adhesive. ing. In this case, four V-shaped steel strands are combined to form an X-shaped radiolarian-like high tensile strength bonding member, and four pairs of legs 6 are inserted into the hollow part of the end 2 of the straight pipe 1 and bonded. Fixed by the agent, 4
The main connection is made to the straight pipe 1 of the book, and the plate-like connecting members 9 and 10 are pasted around both the inside and outside of the square pyramid formed by the straight pipe 1, and they are mutually connected and fixed with adhesive. to strengthen the main bond mentioned above.
Incidentally, a reinforced synthetic resin containing high tensile strength fibers may be applied and cured to be bonded and fixed. In this case straight pipe 1
Since the ends 2 of the straight pipes are bonded and fixed on both the inner and outer surfaces, the bonding force and rigidity between the straight pipes can be significantly improved. In this case, the connecting member is formed by combining four long stranded wires to form eight legs, and as shown in the figure, two legs 6 are inserted into the end 2 of the straight rod 1 to connect the straight rod 1 and the legs 6. Since they are connected to each other, there is no need for the disk 4, ring 7 or wedge 8. The above mainly shows an example in which the joint is firmly connected, but when the end 2 of the straight pipe 1 is not inserted to the base of the leg 6, the flexibility of the joint can be increased, so the frame structure can be folded. . In this case, metal chains may be used for the legs 6 of the coupling member.

[Brief explanation of drawings]

FIG. 1 shows an example of a frame construction. FIG. 2 shows a known example of the connecting portion of the straight pipe end of the above structure. FIG. 3 shows a straight pipe end connection according to the invention. FIG. 4 shows another embodiment of the coupling member according to the invention. FIG. 5 shows another embodiment of the straight pipe end joint according to the invention. Explanation of the symbols: 1 is a straight pipe, 2 is the end of the straight pipe 1,
3 and 4 are disks, 5 is a hole, 6 is a steel stranded wire leg, 7 is a steel ring, 8 is a wedge, 9 and 10 are plate-like connecting members, and a is a dotted circle portion.

Claims (1)

[Scope of Claims] 1. A frame construction body that is assembled into a polygonal three-dimensional structure by interconnecting the ends of a plurality of straight rods, which has three or more legs that are flexible in the lateral direction and do not expand or contract in the length direction. A radiolaria-shaped high tensile strength coupling member is used, and the legs of the high tensile strength coupling member are inserted and coupled into a hollow part provided at the end of the straight rod. A frame construction body characterized by: 2. The frame structure according to claim 1, wherein a plate-like connecting member is applied to the outer periphery of the straight rod end portions connected by the connecting member to bond and secure them to each other.