FI101995B - Joint of crossing wooden poles - Google Patents

Description

101995

Joint of crossing wooden poles

The invention relates to the connection of intersecting wooden bars, in which no metal connecting parts are required.

The joint according to the invention has at least two intersecting singing assembled wooden rods, which are connected to each other by compressing the alternating lamellae in the joint area so that the lamellae receive the compressive pressure required for gluing outside the joint area.

In wooden construction technology, it has always been a problem to make a rigid joint. In currently used joint solutions based on mechanical connectors, the displacements are detrimental and in most cases the fit of the connectors in the joint determines the timber size to be used. Notched adhesive joints are not particularly well suited for construction use, as the strength of the rod to be joined is reduced due to the notch.

Of the known methods, the most commonly used perimeter and lattice structures are the 15 NR nail plate. The weakness of the NR nail plate is its poor fire resistance. Of the known methods, the most economical is the finger joint, but it can only be used to connect the two rods end to end.

In the joint according to the invention, it is essential that no notches or metal joints are required, but that the lamellae, two or more intersecting at an arbitrary angle, are compressed in the junction area after gluing so that the lamellae also have sufficient contact outside the junction area to adhere to each other.

The features of the invention are set out in the appended claim.

The joint according to the invention can be used for both construction and furniture. industry.

Figure 1 shows a joint in which the lamellae 2 of two intersecting rods are compressed in the joint area by the required 50% in this case, whereby the lamellae 1 parallel outside the joint area have sufficient contact 3 for gluing to each other.

2 101995

Figure 2 shows an embodiment of the joint according to Figure 1 in a grate structure assembled from I-beams. The connection is made as a separate piece 4, assembled from the lamellae according to Fig. 1, and connected by a finger joint 5 to the end of the I-beam.

5 In Figure 2, the elements assembled from the I-beams can be connected to each other by conventional mechanical joints. The pressing and / or tensile capacity of the plates to be fastened to the upper and lower surface of the grate element should be utilized.

Such a solution also makes it possible to make cross-bearing tiles with wooden structures.

It is most advantageous to attach the connecting part to the rods with a finger joint as shown in Figure 2, but mechanical connectors can also be used if the connection is made on site. The use of the joint is particularly suitable for the manufacture of prefabricated trusses and frames.

It will be apparent to one skilled in the art that the joint can be made either by compressing the lamellae after application of the adhesive or by preparing pre-compressed lamellae in which the compressed points are located at the joint at the site.

Claims (1)

101995 CLAIMS Joint of wooden joints assembled from wooden lamellas, characterized in that the lamellae (2) of the intersecting wooden rods in the joint area are arranged alternately and the joint area, or the lamellae separately at the joint area, are compressed so that outside the joint area 3). 101995 Toothed beam made of toothed bellows, bellows made of bellows (2) and battened bellows made of bellows, bogie made of bellows made of toothed bellows (1) toothpicks for limiting contact (3) with varandra.