CONNECTION SYSTEM WITH CONNECTOR PIECE FOR TIMBER CONSTRUCTION

Abstract

A connecting system for wood constructions, having a connecting piece which is a metal plate bent substantially 90+5 to form an angle piece, the connecting piece has a row of holes connecting a first wood construction part to a second wood construction part, the two wood construction parts form a substantial right angle, the connecting piece is fastened with a first row of full-thread screws, introduced into the holes at an angle (a) between 60-85 formed by the screw and the plate in which the holes are arranged, the holes are arranged substantially adjacent the fold with a maximum spacing of 25 mm, the connecting piece is fastened with a second row of nails and/or screws in holes and have a length less than that of the first row of full-thread screws and are introduced substantially perpendicularly into the holes with respect to the corresponding plate.

Claims

1. A connection system for timber constructions, composed of a connector piece, which is a metal plate folded at an angle of substantially 90+5 to form an angle section, the plate of the connector piece having a series of holes connecting a first wooden construction part with a second wooden construction part, the two construction parts forming a substantially right angle and the connector piece being fastened with a first series of fully threaded screws fitted into holes at an angle ranging from 60 to 85, formed by the screw and the plate with the holes, these holes being arranged substantially adjacent to a folding line of the connector piece at a distance of not more than 25 mm, the connector piece being fastened with a second series of nails and/or screws in holes, said second series of screws/nails having a smaller length relative to the first series of fully threaded screws and fitting into the holes substantially perpendicular to their respective plate and into the two wooden construction parts.

2. The connection system for timber constructions as claimed in claim 1, wherein the first series of fully threaded screws fit into the holes at an angle ranging from 60 to 85, formed by the screw and the plate with the holes and these holes are arranged substantially adjacent to the folding line, at a distance of not more than 5 mm.

3. The connection system for timber constructions as claimed in claim 1, wherein the angle is substantially 75.

4. The connection system for timber constructions as claimed in claim 1, wherein the second series of screws/nails fitting into the second holes have a smaller diameter than the first series of fully threaded screws.

5. The connection system for timber constructions as claimed in claim 1, wherein the two wooden construction parts are of massive wood of the type crosslam (XLAM,CLT).

6. A connector piece for constructions for use in a system as claimed in claim 1, wherein it consists a metal plate that is folded at an angle of substantially 90+5 to form an angle section, a first side of the plate of the connector piece being formed with a first series of holes whose diameter ranges from 4 mm to 6 mm; a horizontal side being formed with the first series of holes whose diameter ranges from 4 mm to 6 mm, the horizontal side of the connector piece, near the 90+5 folding axis, at a distance between the folding axis and the center of the holes, being formed with a second series of holes whose diameter ranges from 11 mm to 13 mm, the first holes with the smaller diameter being adapted to receive smooth or grooved nails or screws, and the second holes being adapted to receive fully threaded screws that form an angle ranging from 60 to 85, with the horizontal side.

7. The connector piece for constructions as claimed in claim 6, wherein the distance of the first holes from a left and/or right edge of the connector piece is at least 27 mm.

8. The connector piece for constructions as claimed in claim 6, wherein a distance between the first holes in the horizontal side is at least 55 mm.

9. The connector piece for constructions as claimed in claim 6, wherein the distance of the second holes from a left edge of the connector piece is 14 mm, while from a right edge is 13 mm.

10. The connector piece for constructions as claimed in claim 6, wherein vertical rows of the second series of holes are offset in a horizontal direction of the connector piece by a distance of 19 mm.

Description

DESCRIPTION OF THE DRAWINGS

[0017] The invention will be now described in further detail, based on the description of a preferred, not exclusive embodiment that is schematically shown by way of illustration and without limitation in the accompanying figures.

[0018] FIG. 1 schematically shows a front perspective view of the connector piece.

[0019] FIG. 2 shows an enlarged section of views along line 2-2 of FIGS. 1, 3 and 4 of the connector piece connected to the wooden parts 6, i.e. a wall and a floor.

[0020] FIG. 3 shows a front view of the connector piece.

[0021] FIG. 4 shows a top view of the connector piece.

SUMMARY OF THE INVENTION

[0022] As shown in FIG. 2, which is a section taken along the line 2-2 of FIG. 1 the connector piece 1 is composed of a metal plate 5, preferably made of steel, with a thickness that preferably ranges from 3 mm to 6 mm, and is advantageously 4 mm, folded at an angle of substantially 90+5 to form an angle section.

[0023] The plate 5 is divided by folding axis into a vertical part of the plate 3 and a horizontal part 4. The vertical side 3 of the connector piece is formed with a series of first holes 8 whose diameter d preferably ranges from 4 mm to 6 mm, and is advantageously 5 mm; the horizontal side, e.g. In one embodiment, is formed with 35 holes 8 whose diameter d ranges from 4 mm to 6 mm, and is advantageously 5 mm. The horizontal side of the connector piece, near the 90 folding axis is formed with a second series of holes 7 having a greater diameter n, preferably ranging from 9 mm to 15 mm, and advantageously 12 mm. The first holes 8 with the diameter d are adapted to receive smooth or grooved nails, screws or similar, whereas the second holes 7 with the diameter n are adapted to receive fully threaded screws, that form an angle a ranging from 60 to 85, advantageously 75, with respect to the horizontal plane.

[0024] FIG. 3 shows the distance b of the holes 8 from the upper edge and the same distance b between the holes, which may be, for example, 10 mm. The distance c of the holes 8 from the lower edge is, for example, 60 mm. The distance of the holes 8 from the left and right edges is advantageously 11 mm. In a preferred embodiment, the holes 8 in the vertical direction are offset by a distance f, advantageously 5 mm. The vertical rows of holes 8 are arranged with a center-to-center distance g, advantageously 19 mm. The distance h between the holes 8 in the horizontal direction is preferably 38 mm.

[0025] FIG. 4 shows, according to a preferred example, the distance of the center of the holes 7 from the outer edge of the vertical side, which in this example is about 13 mm. The distance j between the holes 7 and the holes 8 is advantageously 20 mm. The holes 8 of the row on the horizontal side of the element are offset by a distance k, advantageously 5 mm. The minimum distance between the rows of the holes 8 may be, for example, the distance l of 7 mm. The distance m of the holes 8 from the opposite edge of the vertical side of the connector piece may be 10 mm. The distance of the holes 7 from the left and right edges is advantageously at least or exactly 27 mm. The distance p between the holes 7 in the horizontal direction is advantageously at least or exactly 55 mm. The distance q of the holes 8 from left edge is for example 14 mm, and the distance s from the right edge is for example 13 mm. The vertical rows of holes 8 are offset in the horizontal direction by a distance r, for example 19 mm.

[0026] Advantageously, the connection system formed by a connection consisting of a connector piece of the invention which connects a first wooden construction part 6 with a second wooden construction part. The two elements form a substantially right angle. The connector piece is fastened with a first series of fully threaded screws, which fit into the holes 7 at an angle a ranging from 60 to 85 formed by the screw and the plate with the holes, advantageously about 75. These holes are arranged substantially adjacent to the folding line at a distance of not more than 25 mm, advantageously 5 mm. The connection is secured with a second series of nails and/or screws in the holes 8. These second screws/nails have a smaller diameter than the first series of fully threaded screws, which and fit into the holes substantially perpendicularly to their respective plate and into the two wooden construction parts.

[0027] Advantageously the fully threaded screws do not require a washer/ring to be interposed between the plate and their head.

[0028] It will be finally appreciated that the system and connector as described heretofore are susceptible of additions, changes or variants that would be obvious to the skilled person, without departing from the scope of the invention as defined by the appended claims.

LIST OF REFERENCE NUMBERS

[0029] 1 connector piece

[0030] 2 section line, 2-2

[0031] 3 lower plate part

[0032] 4 upper plate part

[0033] 5 metal plate

[0034] 6 wooden construction part

[0035] 7 hole

[0036] 8 hole

[0037] 9 fully threaded screws

[0038] a angle

[0039] b,p,h,g,r,k,l,f distance between holes

[0040] e,o,q,s distance of holes from edge

[0041] l,c distance of holes from folding axis

[0042] j distance between first and second holes

[0043] d,n diameter of holes