DE3127034C1

DE3127034C1 - Flange for connecting duct sections made of sheet metal

Info

Publication number: DE3127034C1
Application number: DE19813127034
Authority: DE
Inventors: Günter 5860 Iserlohn Smitka
Original assignee: Individual
Current assignee: Individual
Priority date: 1981-07-09
Filing date: 1981-07-09
Publication date: 1983-02-24

Abstract

The invention relates to a flange for connecting sheet-metal, cross-sectionally rectangular duct portions for high-pressure ventilation systems, comprising profiles which are to be fastened in a frame-like manner at the ends of the duct portions and have walls which run perpendicularly and parallel to the respective duct side wall and are intended for pushing in the ends of duct portions and for receiving angle-piece legs which can be plugged into the end-side openings of the hollow profiles, the angle pieces being designed as shaped sheet-metal parts having a low thickness and integrally formed beads. In order to achieve, while reducing the amount of material used, a saving in weight, but the same stability, the invention proposes that the hollow profiles (2) have, in each case in one of the walls (3, 4) running in the same direction with respect to the duct end side, at least one longitudinally running bead (12, 16) which extends over the entire length of the hollow profile and is open on the mouth side, and that the angle-piece legs (9, 10) have in each case at least one bead (13) which runs exclusively in the plug-in ring of said legs, is adapted in position and shape to the bead of the hollow profile and can be plugged into the latter, and the hollow profiles be profiled in a filling manner at least next to the beads (12, 13, 16). <IMAGE>

Description

Zur Verbindung benachbarter Hohlprofile 2 miteinander sind aus den F i g. 1 bis 6 ersichtliche Winkelstükke 8 vorgesehen. Letztere sind als Blechformteile ausgebildet und haben zwei zueinander rechtwinklig angeordnete, flache Schenkel 9 und 10, deren lange Profilseiten jeweils in gemeinsamen Ebenen angeordnet sind. To connect adjacent hollow profiles 2 to each other are from the F i g. 1 to 6 visible angle pieces 8 are provided. The latter are as sheet metal parts formed and have two at right angles to each other arranged, flat legs 9 and 10, the long profile sides each in common planes are arranged.

Die Winkelstückschenkel werden bis zur Anlage an nahe des Eckbereiches der Winkelstücke 8 vorgesehene Schultern 11 in die stirnseitigen Öffnungen der Hohlprofile 2 eingesteckt. The contra-angle legs are up to the point of contact near the corner area of the elbows 8 provided shoulders 11 in the end openings of the hollow profiles 2 plugged in.

In F i g. 1 sind in den Wänden 4 der Hohlprofile 2 zwei längs dieser und zueinander parallel verlaufende, nach außen vorstehende, mündungsseitig offene Sicken 12 angeformt: Ferner sind in den Schenkeln 9 und 10 des in den Fig2~4 dargestellten Winkelstückes 8 zwei in Längsrichtung der Schenkel gerichtete Sicken 13 so angeformt, daß beim Einstecken der Schenkel in die stirnseitigen Öffnungen der Hohlprofile 2 die Sicken 13 in die Rinnen der Sicken 12 spielfrei eingreifen. Zudem sind die Winkelstückschenkel 9, 10 so profiliert, daß sie neben den Sicken 13 den von den Wänden 3, 4 und 5 umgrenzten Hohlraum ausfüllen. In Fig. 1 are in the walls 4 of the hollow profiles 2 two along this and mutually parallel, outwardly protruding, open on the mouth side Shaped beads 12: Furthermore, in the legs 9 and 10 are shown in FIGS Angle piece 8 two in the longitudinal direction of the legs directed beads 13 are formed so that that when inserting the legs into the front openings of the hollow profiles 2, the beads 13 engage in the grooves of the beads 12 without play. In addition, they are Elbow legs 9, 10 profiled so that they are next to the beads 13 of the Fill in the cavity delimited to walls 3, 4 and 5.

Die Profilhöhe der Winkelstückschenkel 9 und 10 ist so gewählt, daß in Fortsetzung des Zwischenraumes zwischen den Wänden 6 und 7 zur Wand 3 hin ein so großer Raum freibleibt, um die jeweilige Kanalwand bis zur Anlage an der Innenseite der Wand 3 zwischen die Wände 6 und 7 einstecken zu können. The profile height of the elbow legs 9 and 10 is chosen so that in continuation of the space between the walls 6 and 7 towards the wall 3 as much space remains free around the respective duct wall up to the system on the inside the wall 3 between the walls 6 and 7 can be inserted.

Die Sicken 13 reichen in Richtung zum Eckbereich eines Winkelstückes über die Schultern 11 hinaus und können, wie dies aus der Fig. 2 ersichtlich, in die jeweilige Sicke des anderen Winkelstückschenkels übergehen, um zusätzlich auch den Eckbereich des Winkelstückes 8 zu versteifen. The beads 13 extend in the direction of the corner area of an angle piece beyond the shoulders 11 and, as can be seen from FIG. 2, in pass over the respective bead of the other elbow leg to additionally also to stiffen the corner area of the angle piece 8.

Außerdem sind in den Eckbereichen der Winkelstükke 8 Löcher 14 zur Aufnahme von Schrauben vorgesehen, mit welchen benachbarte Flansche miteinander verbunden werden können. In addition, 8 holes 14 are in the corner areas of the angle pieces Receipt of screws provided with which adjacent flanges with each other can be connected.

Weiterhin sind Randteile 15 der Eckwinkel 8 zur freien Stirnseite hin abgebogen, an welchen sich benachbarte Flansche auch im Bereich der Winkelstückecken unmittelbar aneinander abstützen können. Furthermore, edge parts 15 of the corner brackets 8 to the free end face bent towards which adjacent flanges are also located in the area of the corner pieces can support each other directly.

Bei der in F i g. 5 dargestellten Variante sind auch in der Wand 3 zwei längs dieser gerichtete Sicken 16 so angeformt, daß diese in die Rinnen der Sicken 13 formschlüssig eingreifen. In the case of the in FIG. 5 shown are also in the wall 3 two along this directed beads 16 formed so that these in the grooves of the The beads 13 engage positively.

Außerdem sind in F i g. 5 in strichpunktierten Linien die Elektroden 17 einer Punktschweißmaschine eingezeichnet worden, mit deren Hilfe die in die Hohlprofile 2 eingesteckten Winkelstückschenkel auch stoffschlüssig miteinander verbunden werden können, wobei sichergestellt ist, daß zwischen den Angriffsstellen der Elektroden 17 der Hohlraum des Profils 2 durch den jeweils eingesteckten Winkelstückschenkel ausgefüllt ist, um zwischen beiden Wänden 3 und 4 und dem eingesteckten Winkelstückschenkel haltbare Schweißverbindungen erzielen zu können. In addition, in FIG. 5 the electrodes in dash-dotted lines 17 a spot welding machine has been drawn in, with the help of which the hollow profiles 2 inserted elbow legs are also firmly connected to one another can, whereby it is ensured that between the points of attack of the electrodes 17 the cavity of the profile 2 through the respectively inserted elbow leg is filled in between the two walls 3 and 4 and the inserted elbow leg to be able to achieve durable welded joints.

In Fig.6 ist die Steckverbindung zwischen einem Hohlprofil 2 und einem eingesteckten Winkelstückschenkel 9 bzw. 10 in Richtung dessen Längserstreckung mittels eines Körners 18 gesichert, der in der Wand 3 angeordnet ist und sich bis in den Winkelstückschenkel fortsetzt. In Fig.6 the plug connection between a hollow profile 2 and an inserted elbow leg 9 or 10 in the direction of its longitudinal extension secured by means of a punch 18 which is arranged in the wall 3 and extends up to continues into the contra-angle leg.

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Claims

Claims: 1. Flange for connecting in cross-section in essential rectangular duct sections made of sheet metal, especially for ventilation High-pressure systems, consisting of frame-like at the ends of the channel sections fastening profiles with perpendicular and parallel to the respective duct side wall running walls for inserting the ends of duct sections and for receiving of legs of angle pieces that can be inserted into the front openings of the hollow profiles, the angle pieces as shaped sheet metal parts of small thickness with molded beads are formed, d a d u r c h characterized in that the hollow profiles (2) each at least in one of the walls that are essentially aligned in the same direction as the duct end face (3, 4) at least one longitudinal, over the entire length of the hollow profile have extending bead (12, 16) open on the mouth side, and that the elbow leg (9, 10) each at least one running exclusively in the direction of insertion, the bead of the hollow profile adapted to position and shape, can be inserted into the latter Have beads (13) and at least next to the beads <12, 13, 16) the hollow profiles are profiled to fill in.

2 flange according to claim 1, characterized in that the beads (12) of the hollow profiles (2) in each case in the wall (4) facing away from the duct face are arranged and formed pushed through to the outside.

3. Flange according to claim 1 or 2, characterized in that in the hollow profile walls (3) facing the channel end face and accordingly in the Elbow legs (9 and 10) inwardly pushed through beads (16) are provided 4. Flange according to one of claims 1 to 3, characterized in that the Corner areas of the angle pieces (8) edge parts bent towards the duct face (15) exhibit.

The invention relates to a flange in the preamble of the claim 1 genus disclosed.

In a known from DE-GM 77 21 055 flange, of which the Invention proceeds, beads are formed as sheet metal parts on the angle pieces integrally formed with the same stability by reducing the amount of material used i.a. reduce manufacturing costs.

However, those flanges still require relatively thick hollow profile walls, to the hollow profiles preferably made of sheet metal a sufficient To give stability.

In addition, there are considerable difficulties to the Corner brackets inserted into the end parts of the hollow profiles by means of grains or spot welds securely set in the direction of insertion of the angle piece legs.

With the invention is now for a flange in the preamble of Claim 1 described type while maintaining the in the DE-GM 7721055 known object already achieved a further cost-saving advantages Desired design.

The solution to this problem is characterized in claim 1 can now also the hollow profiles, the material costs and consequently also you Significantly lower dead weight, with significantly thinner wall thicknesses than previously without reducing their stability.

In addition, the claimed design of the hollow profiles and the angle pieces inevitably a correctly positioned assembly of the angle pieces in the Hollow profiles ensured and inevitably by positive locking even after assembly maintained without the need for additional measures.

In addition, it is also used for security purposes when punching or spot welding the angle pieces in the direction of insertion of their legs ensures that the outside Grains or spot welds to be attached to the hollow profiles on the inside In any case, there are also elbow zones without play that are used for connection are essential when the grains or spot welds are positioned near the beads so that now a positive connection to secure the connectors is no longer left to chance as in the case of the prior art the beads, as disclosed in claim 2, are arranged and designed.

In addition, in the hollow profile walls facing the channel end face and correspondingly inwardly pressed beads in the elbow legs are provided.

On the one hand, this results in a further increase in stability On the other hand, the inwardly pressed corrugations form positionally secure recordings for seals to be arranged between adjacent flanges, which also results in a Simplification of assembly results in To further simplify assembly and thus to further reduce costs, it is advantageous to use the flange described above, as characterized in claim 4 to train.

Embodiments of the invention are shown in the drawings and are described in more detail below.

It shows F i g. 1 a part of a channel section with parts of a Flange in perspective view, F i g. 2 a flange corner elbow in the front view, F i g. 3 the same in section 111-111, FIG. 4 the same in section IV-IV, Fig.5 and 6 variants of a flange, each in cross section.

In Fig. 1 are on the walls arranged at right angles to each other a duct section 1 formed from sheet metal, of which only two walls are shown, a hollow profile 2 formed from sheet metal is attached.

These hollow profiles 2 have two parallel to the channel end face Walls 3 and 4, the latter bridging wall 5 and two to the respective channel side wall parallel walls 6 and 7.

The latter are arranged at such a distance from each other that the respective channel side wall is frictionally clamped between these.