DE102018114433A1 - Beam connector for rafter-purlin connection - Google Patents

Abstract

Beam connector (301) for connecting a first beam (120), in particular a purlin (120), to a second beam (110), in particular a rafter (110), the second beam (110) being the first beam (120) X- and the beam connector (301) crosses a first section (302) for connection to the first beam (120) and a second section (303), which adjoins the first section (302), for connection to the second beam (110) characterized in that the beam connector (301) additionally has a third section (311) for connection to the first beam (120) and a fourth section (312), which preferably adjoins the third section (311), for connection to the second Has bar (110).

Description

The invention relates to a beam connector for connecting a first beam to a second beam, the first beam crossing the second beam in an X-shape, according to the preamble of claim 1. In particular, the invention relates to a rafter-purlin anchor for anchoring a rafter to a Purlin according to the preamble of claim 1.

Saddle roofs or pent roofs, for example for residential houses, typically have a wooden structure below their roof surface to support the roof surface. A variant of such a wooden construction on gable roofs is the so-called purlin roof structure 100 , which is exemplary in 1a is outlined. Components of such a purlin roof structure 100 are rafters 110 that with a horizontal ceiling 200 form the triangular cross section of a gable roof, the rafters 110 preferably represent the isosceles sides of the triangle. This triangle can span a plane perpendicular to the surface. The plane spanned by the triangle can also be designed obliquely, for example in the case of a falling eaves. The blanket 200 is designed for example as a concrete ceiling and through the vertical walls of the house 210 supported. For purlin roof trusses 100 the rafters rest 110 as slanted bars on the so-called purlins 121 . 122 . 123 , which collect the vertical roof loads as horizontal struts that run mostly horizontally to the ground and place them on posts 130 or derive vertical struts. In the area of the ceiling 200 the so-called purlin runs 123 , At the intersection of two rafters 110 , i.e. the ridge purlin runs in the top of the roof or in the top of the triangular cross-section 122 , Horizontal longitudinal struts in between are called so-called middle purlins 121 designated. From the specific inclination of the rafters 110 the roof pitch results, represented by the roof pitch angle or pitch angle α , The connection point between the rafters 110 and the purlins 121 . 122 . 123 is typically a saddle connection 300 realized.

Such a saddle connection 300 is in 1b exemplified by a connection between a rafter 110 and a purlin 120 shown. The rafters have a positive hold 110 a saddle 111 , also called Kerve, on. The shape of the saddle 111 is matched to the outer contour of the purlin 120 and to a predetermined angle of inclination α Voted. The saddle connection is secured 300 in the prior art, for example, by a beam connector 301 , shown here as a rafter-purlin anchor. This can be designed as a stamped and then bent sheet metal piece. The beam connector 301 has a first section 302 which on the purlin 120 is attached and a second section 303 on which on the rafters 110 is attached. The beam connector can be used for fastening 301 with mounting holes 305 to hold fasteners 304 (Screws or nails) can be designed as a perforated plate. The first paragraph 302 and the second section 303 are formed, for example, as partial surfaces of a perforated plate, which are at right angles to one another by a first bend 307 are bent. The number of fasteners used 304 is matched to the given load. If necessary, holes have to be pre-drilled in the beams to accommodate nails. The rafter-purlin anchor shown is shown in the "right-hand version". On the other side of the rafters 110 , hidden from the viewer, there is a rafter-purlin anchor in the "left version". The terms "left" and "right" mean the perspective of a mechanic or a roofer who works on the outside of the roof (standing on a ladder, for example). The right and left versions cannot normally be interchanged. A roofer must always have the right version of a rafter-purlin anchor with them and at hand. A so-called rafter nail is usually used for additional hold 306 used. It is a long nail that is in the area of the saddle 111 after predrilling through the rafters 110 and into the purlin 120 is struck, with the pre-drilling the planned angle of inclination α of the roof must be taken into account.

A large number of further connectors for fastening two wooden beams, for example via fastening openings, are known from the prior art 305 known. So it shows 1c a beam connector designed as a single angle 301 , which also has a first section 302 and a second section 303 which is arranged at right angles to one another and via a first bend 307 are interconnected. In the area of a bend there may be additional stiffeners 313 be provided. 1d shows one as a double angle 308 trained connector, as it is also offered by the company Primo-Befestigungsstechnik GmbH. To form such a double angle 308 a correspondingly formed flat piece of sheet metal is bent or bent a total of three times. The double angle 308 points analog 1c a first section 302 and a second section 303 on what about a first bend 307 a bent piece of sheet metal are interconnected. In addition to this first single angle, a second single angle is provided, the third section 311 and a fourth section 312 which includes a second bend 314 a bent piece of sheet metal are connected together to form a right angle. The first Single angle and the second single angle form mirror symmetry to a first plane of symmetry and / or center plane 350 between the first section 302 and the third section 311 another right angle, the first section 302 and the third section 311 over a third bend 321 a bent piece of sheet metal are interconnected. This double angle 308 can be used, for example, to connect a column or a beam to the floor. For more arrangement options for fasteners 304 (see. 1b) can in double angle 308 slots 322 be provided.

The DE 30 16 659 A1 relates to a support device for fastening a ridge slat with a U-shaped head part and legs diverging sideways downwards. It is envisaged to bend the legs outwards several times in order to adapt to different roof pitches by placing the different leg areas as parallel as possible to the respective roof battens on the roof battens adjacent to the ridge battens. This is to achieve the most possible rectangular interlocking of the divergent legs with those of the brackets on the adjacent roof battens. From the DE 32 13 358 A1 a similar support device is known, but the diverging legs can be made in several parts.

Also the DE 40 29 357 A1 has a U-shaped headboard to support a ridge purlin. The head part is height-adjustable via a vertical adjusting screw with a V-shaped fastening device for a full support on the underlying beams, for example a rafter joint. In the DE 199 37 266 C2 is the adjustable connecting device between the head part and the V-shaped fastening device, instead of with a vertical adjusting screw, carried out by a rod-shaped support part and a spring clip holder, the spring clip holder holding the support part in a clamping handle self-locking.

The DE 19849507 C1 relates to a device with a U-shaped housing, in the legs of which two pressure plates are pivotally mounted, for temporarily clamping rafter heads in the ridge purlin area, so that when rafter heads are nailed to the ridge purlin, the rafters do not slip out of the intended position. When the rafters' heads are temporarily clamped to a ridge purlin, the swiveling pressure plates fit snugly against the top of two opposite rafters, regardless of the roof pitch angle.

The DE 102012007700 B4 relates to an angle connector for connecting a purlin roof of a purlin roof to a reinforced concrete ceiling. The angle connector is placed with a first section on the reinforced concrete ceiling in such a way that its second section comes to rest on the foot purlin.

The DE 41 08 853 C2 relates to a beam connector for crossing beams, in particular for a rafter with a purlin. The beam connector consists of a plate provided with bores with two part plates angled against one another, a part plate being connected to the first beam and the second part plate being connected to the second beam. The beam connector described represents a variant of a conventional rafter-purlin anchor 301 (see. 1b) represents, here the "left embodiment" and the "right embodiment" are more interchangeable. The beam connector does not offer any tools for handling the roof slope.

To avoid these disadvantages and to facilitate assembly of two intersecting X-shaped beams, in particular to facilitate the assembly of a rafter with a purlin, the beam connector specified in claim 1 is specified. Optional, advantageous embodiments of the invention are specified in the dependent claims. It should be pointed out that the features and measures listed individually in the following description can be combined with one another in any technically meaningful manner and show further refinements of the invention. The description additionally characterizes and specifies the invention, in particular in connection with the figures.

The invention relates to a beam connector for connecting a first beam, in particular a purlin, to a second beam, in particular a rafter, wherein the second beam crosses the first beam in an X-shape and the beam connector has a first section for connection to the first beam and a second Section, which is adjacent to the first section, for connection to the second bar. The beam connector additionally has a third section for connection to the first beam and a fourth section, which preferably adjoins the third section, for connection to the second beam.

The addition of the additional sections improves the stability of the beam connection, in particular for beam connections in the roof structure, for example between a rafters and a purlin, the rafters crossing the purlin in an X-shape. The beam connector according to the invention is particularly suitable for use as a rafter-purlin anchor for use in roof construction. In the further course of the description, rafters and purlins are usually referred to in simplified form, with "purlin" every first bar and "rafters" includes every second beam, not only in the roof structure, regardless of its cross-section. The rafters can be arranged virtually “vertically” with respect to the purlin, in that at least one rafter wall runs perpendicular to a purlin wall. This means that a central axis or beam edge of the purlin runs perpendicular to a side wall of the rafter. In the case of a falling eave, however, this central axis of the purlin or the beam edge of the purlin can also run obliquely to all side walls of the rafter. A saddle or a kerve, i.e. an incision in the rafters, can be dispensed with by using additional sections on the beam connector. This avoids the disadvantage that such a saddle can weaken the beam under certain circumstances by reducing the beam cross-section, which means that additional stabilization measures are then required, particularly in roof construction. The additional processing step of rafters for the manufacture of the saddle is also omitted, which makes assembly easier. An additional rafter nail can, but does not have to be used.

In a particularly preferred embodiment of the invention, the first section and the third section of the beam connector are arranged at right angles to one another or form a right angle. The right angle is preferably created by bending a flat piece of sheet metal, so that the two sections of the flat sheet form the legs of the right angle. As a result, the beam connector can be positively attached to the purlin with a rectangular cross-section so that the two sections lie flush against the purlin and one edge of the purlin is arranged on or during the bend, i.e. the interior of the right angle. The edge of the purlin can thus touch the inner region of the bend or the interior of the right angle, and thus the underside of the first and third sections, linearly along the longitudinal extent of the right angle. Placed on the purlin, this makes it difficult to inadvertently slip during assembly, and after the attachment of fasteners, the purlin is securely gripped and held. The first or the third section are designed for top support on the purlin. Due to the top support, the vertical roof loads can be better transferred from the rafters to the purlin, which additionally stabilizes the roof structure statically. Such a beam connector can thus replace the saddle or the peg in the rafters. This enables use as a saddle-rafter-purlin anchor, i.e. as a rafter-purlin anchor or beam connector with saddle for a rafter-purlin connection, since the beam connector already has the saddle integrated. Due to the flat support on the top of the purlin, the installer can also "let go" of the beam connector in its final assembly position even before using the fastening tools (screws, nails), even without the use of tines, without the beam connector changing its position or falls down. In principle, this enables assembly with one hand.

In an additional embodiment of the beam connector, the second section and the fourth section are arranged in one or all of the parts, for example for full contact with a flat beam wall. In particular, the second section and the fourth section are arranged in whole or in part, for example for abutting against a side wall of a rafter. The stability is further improved by the fact that two or more sections of the beam connector bear the loads of the rafters on the connection. When using two beam connectors, one on the left and one on the right of the rafters, there are a total of four flat sections on the rafters for receiving the loads.

In an optional further development of the beam connector, a boundary edge of the second section and a boundary edge of the fourth section are arranged at right angles to one another or enclose a right angle. With this variant of the invention, one of the two sections always absorbs above all the vertical roof loads and one of the two sections primarily absorbs the horizontal roof loads. Due to the right-angled arrangement of the two sections, identical beam connectors can be installed both on the left of a rafter and on the right of a rafter. As a result, the fitter no longer has to have different beam connectors at hand. This also prevents the left and right versions from being mixed up, making assembly much less prone to errors.

In addition, the beam connector can be mirror-symmetrical with respect to a first plane of symmetry and / or center plane. This ensures unrestricted usability of a beam connector on both sides of the rafters, which reduces the number of components required to assemble a roof truss and thus lowers the manufacturing costs for the necessary components and thus the assembly costs. This symmetry in particular also means that the surfaces of the first section and the third section, and also of the second and fourth sections, are each congruent to one another.

In a further advantageous embodiment, a linear and / or punctiform contact and / or support is formed or can be formed between a bar edge of the first bar and an underside bar wall of the second bar. In roof construction, this is to be understood in such a way that the Rafters with an underside boundary wall lie tangentially and / or obliquely on a beam edge of the purlin and thereby form a linear support with the formation of a straight line. In the case of differently shaped beams (for example with a round cross section), punctiform supports or combinations of linear and punctiform supports are also conceivable. This is also an effect of the fact that a saddle or a bow is not necessary.

Advantageously, an upper-side boundary wall of the first bar and a lower-side bar wall of the second bar jointly enclose an acute-angled angle of inclination, the bar connector having an adjusting means for determining and / or determining the angle of inclination. In the roof construction, an upper-side boundary wall of the purlin and a lower-side wall of the rafters together enclose the acute-angled angle of inclination of the roof slope, the beam connector having an adjusting means for determining and / or fixing the roof slope. The angle of inclination of the rafters, which is attached to the purlin with or without a saddle, ultimately determines the roof slope or the roof pitch. The roof pitch is always measured towards the roof. If a saddle is not used in the rafters, a smooth underside boundary wall of the rafters offers no orientation for fitting the rafters taking into account the specified angle of inclination. This orientation can be made possible by an adjustment means on the beam connector, i.e. an aid for adjusting the roof slope. After installation, the actual inclination of the rafters with respect to the purlin can also be determined or read using the setting means. After installation, there is also structurally integrated information about the angle of inclination on each rafter-purlin connection, which can be read if necessary. This enables subsequent checks, which can significantly increase the safety and quality of the execution. Assembly errors can be recognized early and corrected if necessary. This is particularly advantageous in the case of subsequent repair and renovation work in confusing or difficult-to-access places if a determination of the roof pitch would otherwise be associated with increased effort.

In an optional development, the setting means has one or more straight setting elements on the second section and / or fourth section. Such a straight adjustment element can be designed as a notch, groove, groove, depression or simply as a recorded marking line. The setting elements can be designed continuously or with interruptions. The edge of the rafters and / or another underside boundary wall of a second beam can be placed against such an adjusting element and thus aligned on the basis of the predetermined roof pitch. The corresponding setting elements can be arranged on both side walls of the second and / or the fourth section, which improves the versatility of the beam connector. The arrangement of the setting elements can be the same on both sides, but can also be designed differently.

In a further development of the setting elements, two or more setting elements are designed as straight, radial and / or radially arranged marking lines with a common origin as the intersection of the lines. At the end of such a line spaced from the origin, a label and / or scale can be provided to indicate the angle of inclination to be set or set, in particular the sloping roof to be set or set. For an unlimited interchangeability of the embodiments, two angular dimensions can be provided at each such end, which add up to 90 ° to one another (for example 40 ° and 50 °).

Advantageously, an origin of the setting elements lies in a connection area between the first section and the third section. If the lower beam wall of the rafters lies directly on the beam edge of the purlin, the origin coincides with this beam edge of the purlin or it lies in the interior of the preferably right-angled bend and thus on the underside of the connecting area of the first and third sections of the beam connector. The origin therefore lies in the saddle or on the bending axis of the bend between the two sections which abut the purlin. The setting elements thus run radially or radially away from the beam edge of the purlin, which enables the fitter to easily orientate himself when installing the rafters.

Optionally, the connection area between the first section and the third section forms a linear and / or punctiform contact and / or support for the second bar. In other words, the connection area between the first section and the third section forms a linear and / or point contact and / or support for the rafters. The rafters can thus also rest on the two sections that abut the purlin, forming a straight line. The rafters no longer form a linear and / or punctiform support with the beam edge of the purlin, but with the beam connector itself. This is particularly advantageous when there is no space on the purlin for mounting the first and third section next to the rafters, for example because a dormer is provided. In this case, if the rafters are to be connected to the beam connector first and then the beam connector to the purlin, the fasteners (screws, nails) must be driven through the rafters so that the fasteners are then passed through preferably enlarged fastening openings or elongated holes in the first and / or third section can be brought into operative connection with the purlin. For this, the rafters must be pre-drilled according to the angle of inclination of the roof slope. Alternatively, the partial areas of the flat sheet metal piece in the area of the first and / or the third section can be enlarged accordingly, so that the fastening openings are still accessible for fastening means even when the rafters are installed. The origin for the adjusting elements can be arranged in this embodiment, depending on the selected thickness of the flat sheet piece for the first and third sections with an offset relative to the beam edge of the purlin, the origin nevertheless being in the outer space on the extended bisector of the preferably right angle, which the include first and third sections. It thus lies, for example, on the top side or above on the sheet metal edge between the first and the third section.

In an advantageous development of the invention, a fifth section, which is connected to the first section and / or a sixth section, which is connected to the third section, is for the beam connector for connection to the second beam, that is to say in the roof construction, for example with the rafters , intended. Such a beam connector thus has at least one additional section, or even better two additional sections, for attachment to the rafters. As a result, the stability of the connection between rafters and purlin can be increased to such an extent that a second beam connector, that is to say, for example in the left and in the right variant, can be dispensed with. The rafter can be attached to the purlin with a single beam connector.

In a particularly easy-to-assemble embodiment of the invention, the first section, the second section and the fifth section and / or the third section, the fourth section and the sixth section form a connector with a U-shaped profile for guiding and / or receiving the second Beam, so in the roof structure of the rafters, for example, between the second section and the fifth section and / or the fourth section and the sixth section. The second and the fifth section of the beam connector thus form the legs of the U-profile, while the first section represents the central region of the U-profile. Additionally or alternatively, the fourth and the sixth section of the beam connector form the legs of a further U-profile, while the third section represents the central region of this further U-profile. The central regions of two U-profiles are preferably arranged at right angles to one another around a bend in a flat piece of sheet metal.

In addition, the beam connector is mirror-symmetrical with respect to a second plane of symmetry and / or center plane, the second plane of symmetry and / or center plane being perpendicular to the first section and / or the third section. A quasi-symmetrical guide and / or rail for receiving the rafters is thereby formed, the legs of the U-profiles abutting against two opposite walls of the rafters. The rafters are thus limited by a single beam connector against unintentional slipping to both sides. Corresponding setting elements can also be provided on both side walls of the second, fourth, fifth and / or sixth section for a beam connector with five or six sections.

Advantageously, one or more stiffening elements, for example a rib reinforcement, can be arranged on the beam connector between two adjacent sections. As a result, bending back and / or bending open of two mutually bent partial surfaces of a flat sheet metal piece can be prevented and other loads caused by bending and / or torsion can also be better absorbed. Furthermore, all features known to the person skilled in the art, as are typically used in mounting elements for mounting a roof truss, can be added to the beam connector. In addition to stiffening elements, there are, for example, drive-in prongs, assembly tines and / or assembly pins that drill and / or slide into the wood of a beam when a fastening element is attached for locking and thus prevent or complicate unintentional slipping after hanging up.

• 1a eine Prinzipskizze eines Pfettendachstuhls aus dem Stand der Technik;
• 1b einen Balkenverbinder in perspektivischer Darstellung zur Verankerung eines Sparrens mit einer Pfette aus dem Stand der Technik;
• 1c einen Einfachwinkel in perspektivischer Darstellung aus dem Stand der Technik;
• 1d einen Doppelwinkel in perspektivischer Darstellung mit zwei Einfachwinkeln aus dem Stand der Technik
• 2a einen Balkenverbinder in Verwendung in perspektivischer Darstellung in einer beispielhaften Ausführungsform der Erfindung;
• 2b einen Balkenverbinder in Verwendung in einer schematischen Frontansicht in einer beispielhaften Ausführungsform der Erfindung;
• 2c einen Balkenverbinder in Verwendung in einer schematischen Draufsicht und/oder Seitenansicht in einer beispielhaften Ausführungsform der Erfindung;
• 3a einen Balkenverbinder in perspektivischer Darstellung in einer alternativen beispielhaften Ausführungsform der Erfindung;
• 3b einen Balkenverbinder in Verwendung in perspektivischer Darstellung in einer alternativen beispielhaften Ausführungsform der Erfindung.

Further details, features and effects based on the invention result from the following description of exemplary embodiments of the invention, as well as from the drawings. These show in:

• 1a a schematic diagram of a purlin roof structure from the prior art;
• 1b a beam connector in perspective for anchoring a rafter with a purlin from the prior art;
• 1c a single angle in perspective from the prior art;
• 1d a double angle in perspective with two single angles from the prior art
• 2a a beam connector in use in perspective in an exemplary embodiment of the invention;
• 2 B a beam connector in use in a schematic front view in an exemplary embodiment of the invention;
• 2c a beam connector in use in a schematic top view and / or side view in an exemplary embodiment of the invention;
• 3a a beam connector in a perspective view in an alternative exemplary embodiment of the invention;
• 3b a beam connector in use in perspective in an alternative exemplary embodiment of the invention.

In the different figures, identical or functionally identical parts are always provided with the same reference symbols, which is why they are usually only described once. It should also be pointed out that the invention should under no circumstances be restricted to exclusively or predominantly symmetrical embodiments. In addition, it should be clarified that designations such as "first", "second", "third" ... should facilitate a clear designation or assignment and there is no indication of the importance of the individual features for the device or a sequence in a manufacturing process , Terms such as "rectangular" or "right angle" also include rounded versions and transitions with radius or bending radius.

2a . 2 B and 2c show a rafter 110 which is at an angle on a beam edge 126 a purlin 120 rests with the formation of a linear contact. The bar wall on the top closes 125 the purlin 120 and the underside of the beam wall 115 of rafters an acute angle of inclination α one, which can correspond to the roof pitch of a finished saddle roof. A saddle 111 or a kerve (cf. 1b) points the rafters 110 not on. A beam connector 301 , which is basically a saddle beam connector 301 the saddle 111 (see. 1b) makes dispensable, points to the full surface support of the purlin 120 a first section 302 and a third section 311 on which, quasi like a single angle (cf. 1c ), from a flat sheet, at the third bend 321 bent, connected together. The illustration shows a beam connector 301 , the left of the rafters 110 is mounted, but also to the right of the rafters 110 can be installed (cf. 2c ). The beam connector 301 can thus be rafters on both sides 110 to be assembled. From a terminal edge of the first section 302 stands further, at right angles, bent around the first bend 307 , the second section 303 away, which to the full-surface plant on a boundary wall of the rafters 110 is trained. From a terminal edge of the third section 311 stands at right angles, curved around the second bend 314 , the fourth section 312 away, which to the full area plant on the same boundary wall of the rafters 110 is formed like the second section 303 , All designated sections 302 . 303 . 311 . 312 are formed as rectangular sections of a flat sheet metal piece. There are a plurality of fastening openings in each piece of flat sheet metal 305 to hold fasteners 304 (see. 1b) intended. The number of fasteners actually used 304 results from the expected load. The second section 303 lies with the fourth section 312 in one plane, with a boundary edge 303a of the second section 303 with a boundary edge 312a of the fourth section 312 quasi L-shaped encloses a right angle. Due to the symmetrical design (cf. 1d ) is a second identical beam connector 301 for increased stability also to the right of the rafters 110 mountable. In the case of a similar assembly to the right of the rafters 110 wouldn't represent the second section 303 of the beam connector 301 essentially point vertically upwards, but the fourth section 312 (see. 2c ).

As already described, the angle of inclination determines α ultimately the roof slope. For example, when installing a rafter for the first time 110 with a purlin 120 it would be beneficial if the beam connector 301 on rafters 110 could be pre-assembled. Are the second section 303 and the fourth section 312 already in the correct alignment on the rafters 110 pre-assembled, the first section 302 and the third section 311 , instead of a saddle connection 300 with a saddle 111 (see. 1a . 1b) or a Kerve, just flat on the purlin 120 be created. For this purpose there are adjustment means 400 provided, the adjusting means in the illustrated embodiment of the invention 400 adjustment 410 with straight lines. Several such straight lines, continuous or interrupted, are arranged radially or radially and have a common origin 420 as the intersection of the lines. The underside boundary wall is used to determine the roof slope 115 of rafters 110 laid out on a corresponding line. A scale can be arranged along the setting elements. A note, for example "above", on the second section 303 and the fourth section 312 indicate the section at which the angle of inclination α preferably can be read. If, for example, the roof is to have a slope of 40 °, the boundary wall on the underside 115 of rafters 110 to the corresponding line of the vertical section (here the second section 303 ), which is labeled "40 °". The in the 2a shown arrangement of rafters 110 and purlin 120 has an angle of inclination α from approx. 42 °. After installing the beam connector 301 on rafters 110 the rafters can 110 manually or with a crane in the purlin roof structure 100 (see. 1a) lifted and onto the purlins 120 be put on. After fastening with appropriate fasteners 304 (see. 1b) can the angle of inclination α , i.e. the roof slope, can be read on every rafter-purlin connection. For the sake of clarity, the scale is only partially shown, but should ideally cover a range of 5 ° -85 ° in 5 ° steps or similar.

2 B shows essentially the arrangement according to 2a in a front view. In that the rafters 110 with its beam wall on the underside 115 directly on the edge of the bar 126 the purlin 120 the origin falls 420 of the setting elements 410 with the bar edge 126 together. Has the underside of the beam wall 115 of rafters 110 however, a distance from the edge of the bar 126 the purlin 120 on, for example by placing the rafters 110 on a piece of flat sheet metal (cf. 3a . 3b) , can also the origin 420 in the connection area of the first section 302 with the third section 311 , in the area of the third bend 321 , an offset from the edge of the bar 126 have, the offset can correspond to the thickness of the flat sheet piece. In this case, the origin is 420 preferably arranged on the sheet edge. The form of the scale on the sections where the reading is made depends on the rafters' edition 110 to adjust or adjust accordingly. 2c shows the arrangement according to 2a and 2 B in a top view. While in the left embodiment the first section 302 on the top wall of the beam 125 the purlin 120 rests, the third section lies in the right embodiment 311 on the top wall of the beam 125 the purlin 120 on. The section that in the left embodiment is aligned vertically on the rafters 110 in the right embodiment lies horizontally on the rafters 110 on. The reverse also applies.

3a shows a beam connector 301 according to 2a-2c with an additional fifth section 323 and an additional sixth section 325 , The fifth section 323 is with the first section 302 connected, the connection by a fourth bend 324 results from a piece of flat sheet metal. The sixth section 325 is with the second section 303 connected, the connection being made by a fifth bend 325 results from a piece of flat sheet metal. All six sections 302 . 303 . 311 . 312 . 323 . 325 are formed as rectangular sections of a flat sheet metal piece can be made from a correspondingly cut flat sheet metal piece by bending in a total of five steps. Furthermore, the surfaces of the second section 303 , the fourth section 312 , the fifth section 323 and the sixth section 325 congruent to each other. Furthermore, the second section 303 parallel to the fifth section 323 and the fourth section 312 parallel to the sixth section 325 aligned. You can use the beam connector 301 So divide into two imaginary halves that are mirror-symmetrical to each other on a second plane of symmetry and / or center plane 360 are arranged. During the first section 302 and the third section 311 for flat support on the purlin (cf. 3b) 120 trained, the rafters 110 on the third bend 321 forming a linear and / or point contact on and / or is a short distance from the third bend 321 arranged. On two lateral, opposite walls of the rafters 110 lie the second section 303 and the fifth section 323 , as well as the fourth section 312 and the sixth section 325 flat. They thus form an adapter or guide rail for the rafters in pairs 110 , wherein a pair each have a U-shaped profile. Will the rafters 110 with this variant of the beam connector 301 connected before the beam connector 301 on the purlin 120 is launched (cf. 3b) , the first section 302 and / or the third section 311 then on the purlin 120 be attached. With a sufficiently large angle of inclination α , they are on the purlin 120 adjacent sections sufficiently accessible. Otherwise, fasteners 304 like a rafter nail 306 (see. 1b) by means of an appropriately predrilled rafter 110 to be driven. The fastening openings are advantageous 305 enlarged in the corresponding section, making it easier to assemble the nail or screw. Alternatively, the first section 302 and / or the third section 311 enlarged accordingly and possibly on the purlin 120 be turned over so that the first section 302 , the third section 311 and the additionally turned-over section has a U-shaped profile.

3b shows the beam connector 301 that is for mounting on a purlin 120 is on the hook. The rafters 110 (see. 2 ) can now be inserted through the beam connector 301 trained guide rail inserted and on the third bend 321 be placed to form a linear and / or point contact. A beam edge of rafters 110 and / or an underside boundary wall 115 (see. 2 ) can be applied to one of the dashed lines, what adjustment items 410 an adjusting means 400 suggest. The angle of inclination can be used on a label or on a scale α and the roof slope can be read, making assembly easier and more precise.

LIST OF REFERENCE NUMBERS

100

Pfettendachstuhl

110

Rafters / second bar

111

Saddle / bird's mouth

115

Underside of the beam wall

120

Purlin / First beam

121

Mittelpfette

122

ridge beam

123

eave plate

125

Upper wall of the beam

126

beam edge

130

post

200

blanket

210

housewall

300

saddle connection

301

bar connector

302

first section

303

second part

303a

boundary edge

304

fastener

305

mounting holes

306

rafter nail

307

First bend

308

double angle

311

Third section

312

Fourth section

312a

boundary edge

313

stiffening

314

Second bend

321

Third bend

322

Long hole

323

Fifth section

324

Fourth bend

325

Sixth section

326

Fifth bend

350

First level of symmetry / middle level

360

Second plane of symmetry / middle plane

400

adjustment

410

adjustment

420

origin

α

tilt angle

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 3016659 A1 [0005]
• DE 3213358 A1 [0005]
• DE 4029357 A1 [0006]
• DE 19937266 C2 [0006]
• DE 19849507 C1 [0007]
• DE 102012007700 B4 [0008]
• DE 4108853 C2 [0009]

Claims (10)

Beam connector (301) for connecting a first beam (120), in particular a purlin (120), to a second beam (110), in particular a rafter (110), the second beam (110) being the first beam (120) X- and the beam connector (301) crosses a first section (302) for connection to the first beam (120) and a second section (303), which adjoins the first section (302), for connection to the second beam (110) characterized in that the beam connector (301) additionally has a third section (311) for connection to the first beam (120) and a fourth section (312), which preferably adjoins the third section (311), for connection to the second bar (110). Beam connector (301) after Claim 1 , characterized in that the first section (302) and the third section (311) are arranged at right angles to one another or enclose a right angle. Beam connector (301) after Claim 1 or 2 , characterized in that a boundary edge (303a) of the second section (303) and a boundary edge (312a) of the fourth section (312) are arranged at right angles to one another or enclose a right angle. Beam connector (301) according to one of the preceding claims, characterized in that an upper-side boundary wall (125) of the first beam (120) and a lower-side beam wall (115) of the second beam (110) can together include an acute-angled angle of inclination (α) and the Beam connector (301) has an adjusting means (400) for determining and / or determining the angle of inclination (α). Beam connector (301) after Claim 4 , characterized in that the adjusting means (400) has one or more straight adjusting elements (410) on the second (303) section and / or fourth section (311). Beam connector (301) after Claim 5 , characterized in that one or more setting elements (410) are formed as straight radial and / or radial marking lines with a common origin (420) as the intersection of the marking lines. Beam connector (301) after Claim 6 , characterized in that an origin (420) of the setting elements (410) lies in a connection area between the first section (302) and the third section (311). Beam connector (301) according to one of the preceding claims, characterized in that the connection area between the first section (302) and the third section (311) forms a linear and / or point contact and / or support for the second beam (110). Beam connector (301) according to one of the preceding claims, characterized in that a fifth section (323) which is connected to the first section (302) and / or a sixth section (325) which is connected to the third section (311) is provided for connection to the second bar (110). Beam connector (301) after Claim 9 , characterized in that the first section (302), the second section (303) and the fifth section (323) and / or the third section (311), the fourth section (312) and the sixth section (325) a connector with a U-shaped profile for guiding and / or receiving the second bar (110) between the second section (303) and the fifth section (323) and / or the fourth section (312) and the sixth section (325).

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